id	sid	tid	token	lemma	pos
iogr-1286	1	1	copyright	copyright	NOUN
iogr-1286	1	2	©	©	ADP
iogr-1286	1	3	the	the	DET
iogr-1286	1	4	author(s	author(s	NOUN
iogr-1286	1	5	)	)	PUNCT
iogr-1286	1	6	.	.	PUNCT
iogr-1286	2	1	this	this	DET
iogr-1286	2	2	work	work	NOUN
iogr-1286	2	3	is	be	AUX
iogr-1286	2	4	licensed	license	VERB
iogr-1286	2	5	under	under	ADP
iogr-1286	2	6	a	a	DET
iogr-1286	2	7	creative	creative	ADJ
iogr-1286	2	8	commons	common	NOUN
iogr-1286	2	9	attribution	attribution	NOUN
iogr-1286	2	10	4.0	4.0	NUM
iogr-1286	2	11	international	international	ADJ
iogr-1286	2	12	license	license	NOUN
iogr-1286	2	13	.	.	PUNCT
iogr-1286	3	1	improved	improve	VERB
iogr-1286	3	2	oil	oil	NOUN
iogr-1286	3	3	and	and	CCONJ
iogr-1286	3	4	gas	gas	NOUN
iogr-1286	3	5	recovery	recovery	NOUN
iogr-1286	3	6	doi	doi	NOUN
iogr-1286	3	7	:	:	PUNCT
iogr-1286	3	8	10.14800	10.14800	NUM
iogr-1286	3	9	/	/	SYM
iogr-1286	3	10	iogr.1286	iogr.1286	PROPN
iogr-1286	3	11	received	receive	VERB
iogr-1286	3	12	may	may	PROPN
iogr-1286	3	13	17	17	NUM
iogr-1286	3	14	,	,	PUNCT
iogr-1286	3	15	2024	2024	NUM
iogr-1286	3	16	;	;	PUNCT
iogr-1286	3	17	revised	revise	VERB
iogr-1286	3	18	july	july	PROPN
iogr-1286	3	19	1	1	NUM
iogr-1286	3	20	,	,	PUNCT
iogr-1286	3	21	2024	2024	NUM
iogr-1286	3	22	;	;	PUNCT
iogr-1286	3	23	accepted	accept	VERB
iogr-1286	3	24	august	august	PROPN
iogr-1286	3	25	14	14	NUM
iogr-1286	3	26	,	,	PUNCT
iogr-1286	3	27	2024	2024	NUM
iogr-1286	3	28	.	.	PUNCT
iogr-1286	4	1	*	*	PUNCT
iogr-1286	4	2	corresponding	correspond	VERB
iogr-1286	4	3	author	author	NOUN
iogr-1286	4	4	:	:	PUNCT
iogr-1286	4	5	modibbo.edu@gmail.com	modibbo.edu@gmail.com	NOUN
iogr-1286	4	6	1	1	NUM
iogr-1286	4	7	study	study	NOUN
iogr-1286	4	8	to	to	PART
iogr-1286	4	9	investigate	investigate	VERB
iogr-1286	4	10	the	the	DET
iogr-1286	4	11	potential	potential	NOUN
iogr-1286	4	12	of	of	ADP
iogr-1286	4	13	coalbed	coalbe	VERB
iogr-1286	4	14	methane	methane	NOUN
iogr-1286	4	15	(	(	PUNCT
iogr-1286	4	16	cbm	cbm	PROPN
iogr-1286	4	17	)	)	PUNCT
iogr-1286	4	18	in	in	ADP
iogr-1286	4	19	nigeria	nigeria	PROPN
iogr-1286	4	20	ibrahim	ibrahim	PROPN
iogr-1286	4	21	modibbo	modibbo	PROPN
iogr-1286	4	22	ahmed	ahmed	PROPN
iogr-1286	4	23	*	*	PROPN
iogr-1286	4	24	and	and	CCONJ
iogr-1286	4	25	saleem	saleem	PROPN
iogr-1286	4	26	qadir	qadir	PROPN
iogr-1286	4	27	tunio	tunio	PROPN
iogr-1286	4	28	,	,	PUNCT
iogr-1286	4	29	cyprus	cyprus	PROPN
iogr-1286	4	30	international	international	PROPN
iogr-1286	4	31	university	university	PROPN
iogr-1286	4	32	,	,	PUNCT
iogr-1286	4	33	nicosia	nicosia	PROPN
iogr-1286	4	34	,	,	PUNCT
iogr-1286	4	35	north	north	PROPN
iogr-1286	4	36	cyprus	cyprus	PROPN
iogr-1286	4	37	abstract	abstract	NOUN
iogr-1286	4	38	the	the	DET
iogr-1286	4	39	increasing	increase	VERB
iogr-1286	4	40	global	global	ADJ
iogr-1286	4	41	demand	demand	NOUN
iogr-1286	4	42	for	for	ADP
iogr-1286	4	43	energy	energy	NOUN
iogr-1286	4	44	has	have	AUX
iogr-1286	4	45	led	lead	VERB
iogr-1286	4	46	to	to	ADP
iogr-1286	4	47	a	a	DET
iogr-1286	4	48	heightened	heightened	ADJ
iogr-1286	4	49	interest	interest	NOUN
iogr-1286	4	50	in	in	ADP
iogr-1286	4	51	unconventional	unconventional	ADJ
iogr-1286	4	52	hydrocarbons	hydrocarbon	NOUN
iogr-1286	4	53	,	,	PUNCT
iogr-1286	4	54	including	include	VERB
iogr-1286	4	55	coalbed	coalbe	VERB
iogr-1286	4	56	methane	methane	NOUN
iogr-1286	4	57	(	(	PUNCT
iogr-1286	4	58	cbm	cbm	PROPN
iogr-1286	4	59	)	)	PUNCT
iogr-1286	4	60	,	,	PUNCT
iogr-1286	4	61	a	a	DET
iogr-1286	4	62	type	type	NOUN
iogr-1286	4	63	of	of	ADP
iogr-1286	4	64	natural	natural	ADJ
iogr-1286	4	65	gas	gas	NOUN
iogr-1286	4	66	found	find	VERB
iogr-1286	4	67	in	in	ADP
iogr-1286	4	68	coal	coal	NOUN
iogr-1286	4	69	deposits	deposit	NOUN
iogr-1286	4	70	.	.	PUNCT
iogr-1286	5	1	this	this	DET
iogr-1286	5	2	research	research	NOUN
iogr-1286	5	3	explores	explore	VERB
iogr-1286	5	4	the	the	DET
iogr-1286	5	5	viability	viability	NOUN
iogr-1286	5	6	of	of	ADP
iogr-1286	5	7	utilizing	utilize	VERB
iogr-1286	5	8	cbm	cbm	PROPN
iogr-1286	5	9	in	in	ADP
iogr-1286	5	10	nigeria	nigeria	PROPN
iogr-1286	5	11	,	,	PUNCT
iogr-1286	5	12	focusing	focus	VERB
iogr-1286	5	13	on	on	ADP
iogr-1286	5	14	four	four	NUM
iogr-1286	5	15	key	key	ADJ
iogr-1286	5	16	basins	basin	NOUN
iogr-1286	5	17	,	,	PUNCT
iogr-1286	5	18	including	include	VERB
iogr-1286	5	19	okpara	okpara	NOUN
iogr-1286	5	20	,	,	PUNCT
iogr-1286	5	21	onyeama	onyeama	NOUN
iogr-1286	5	22	,	,	PUNCT
iogr-1286	5	23	okaba	okaba	ADJ
iogr-1286	5	24	,	,	PUNCT
iogr-1286	5	25	and	and	CCONJ
iogr-1286	5	26	owukpa	owukpa	PROPN
iogr-1286	5	27	basin	basin	PROPN
iogr-1286	5	28	.	.	PUNCT
iogr-1286	6	1	key	key	ADJ
iogr-1286	6	2	coal	coal	NOUN
iogr-1286	6	3	quality	quality	NOUN
iogr-1286	6	4	parameters	parameter	NOUN
iogr-1286	6	5	,	,	PUNCT
iogr-1286	6	6	such	such	ADJ
iogr-1286	6	7	as	as	ADP
iogr-1286	6	8	coal	coal	NOUN
iogr-1286	6	9	rank	rank	NOUN
iogr-1286	6	10	,	,	PUNCT
iogr-1286	6	11	depth	depth	NOUN
iogr-1286	6	12	,	,	PUNCT
iogr-1286	6	13	moisture	moisture	NOUN
iogr-1286	6	14	content	content	NOUN
iogr-1286	6	15	,	,	PUNCT
iogr-1286	6	16	ash	ash	NOUN
iogr-1286	6	17	content	content	NOUN
iogr-1286	6	18	,	,	PUNCT
iogr-1286	6	19	and	and	CCONJ
iogr-1286	6	20	volatile	volatile	ADJ
iogr-1286	6	21	matter	matter	NOUN
iogr-1286	6	22	,	,	PUNCT
iogr-1286	6	23	were	be	AUX
iogr-1286	6	24	analyzed	analyze	VERB
iogr-1286	6	25	and	and	CCONJ
iogr-1286	6	26	compared	compare	VERB
iogr-1286	6	27	to	to	ADP
iogr-1286	6	28	data	datum	NOUN
iogr-1286	6	29	from	from	ADP
iogr-1286	6	30	prominent	prominent	ADJ
iogr-1286	6	31	coal	coal	NOUN
iogr-1286	6	32	basins	basin	NOUN
iogr-1286	6	33	in	in	ADP
iogr-1286	6	34	the	the	DET
iogr-1286	6	35	united	united	PROPN
iogr-1286	6	36	states	states	PROPN
iogr-1286	6	37	,	,	PUNCT
iogr-1286	6	38	indonesia	indonesia	PROPN
iogr-1286	6	39	,	,	PUNCT
iogr-1286	6	40	china	china	PROPN
iogr-1286	6	41	,	,	PUNCT
iogr-1286	6	42	india	india	PROPN
iogr-1286	6	43	,	,	PUNCT
iogr-1286	6	44	australia	australia	PROPN
iogr-1286	6	45	,	,	PUNCT
iogr-1286	6	46	and	and	CCONJ
iogr-1286	6	47	canada	canada	PROPN
iogr-1286	6	48	.	.	PUNCT
iogr-1286	7	1	the	the	DET
iogr-1286	7	2	findings	finding	NOUN
iogr-1286	7	3	indicate	indicate	VERB
iogr-1286	7	4	that	that	SCONJ
iogr-1286	7	5	nigerian	nigerian	ADJ
iogr-1286	7	6	coal	coal	NOUN
iogr-1286	7	7	is	be	AUX
iogr-1286	7	8	predominantly	predominantly	ADV
iogr-1286	7	9	sub	sub	ADJ
iogr-1286	7	10	-	-	ADJ
iogr-1286	7	11	bituminous	bituminous	ADJ
iogr-1286	7	12	,	,	PUNCT
iogr-1286	7	13	with	with	ADP
iogr-1286	7	14	an	an	DET
iogr-1286	7	15	average	average	ADJ
iogr-1286	7	16	moisture	moisture	NOUN
iogr-1286	7	17	content	content	NOUN
iogr-1286	7	18	of	of	ADP
iogr-1286	7	19	10.95	10.95	NUM
iogr-1286	7	20	%	%	NOUN
iogr-1286	7	21	by	by	ADP
iogr-1286	7	22	weight	weight	NOUN
iogr-1286	7	23	and	and	CCONJ
iogr-1286	7	24	is	be	AUX
iogr-1286	7	25	located	locate	VERB
iogr-1286	7	26	at	at	ADP
iogr-1286	7	27	relatively	relatively	ADV
iogr-1286	7	28	shallow	shallow	ADJ
iogr-1286	7	29	depths	depth	NOUN
iogr-1286	7	30	.	.	PUNCT
iogr-1286	8	1	these	these	DET
iogr-1286	8	2	characteristics	characteristic	NOUN
iogr-1286	8	3	suggest	suggest	VERB
iogr-1286	8	4	that	that	SCONJ
iogr-1286	8	5	nigeria	nigeria	PROPN
iogr-1286	8	6	has	have	VERB
iogr-1286	8	7	significant	significant	ADJ
iogr-1286	8	8	potential	potential	NOUN
iogr-1286	8	9	for	for	ADP
iogr-1286	8	10	cbm	cbm	PROPN
iogr-1286	8	11	production	production	NOUN
iogr-1286	8	12	,	,	PUNCT
iogr-1286	8	13	positioning	position	VERB
iogr-1286	8	14	it	it	PRON
iogr-1286	8	15	as	as	ADP
iogr-1286	8	16	a	a	DET
iogr-1286	8	17	promising	promising	ADJ
iogr-1286	8	18	alternative	alternative	ADJ
iogr-1286	8	19	energy	energy	NOUN
iogr-1286	8	20	source	source	NOUN
iogr-1286	8	21	for	for	ADP
iogr-1286	8	22	the	the	DET
iogr-1286	8	23	country	country	NOUN
iogr-1286	8	24	.	.	PUNCT
iogr-1286	9	1	introduction	introduction	NOUN
iogr-1286	9	2	as	as	ADP
iogr-1286	9	3	conventional	conventional	ADJ
iogr-1286	9	4	oil	oil	NOUN
iogr-1286	9	5	and	and	CCONJ
iogr-1286	9	6	natural	natural	ADJ
iogr-1286	9	7	gas	gas	NOUN
iogr-1286	9	8	supplies	supply	NOUN
iogr-1286	9	9	continue	continue	VERB
iogr-1286	9	10	to	to	PART
iogr-1286	9	11	decline	decline	VERB
iogr-1286	9	12	globally	globally	ADV
iogr-1286	9	13	,	,	PUNCT
iogr-1286	9	14	the	the	DET
iogr-1286	9	15	need	need	NOUN
iogr-1286	9	16	to	to	PART
iogr-1286	9	17	explore	explore	VERB
iogr-1286	9	18	unconventional	unconventional	ADJ
iogr-1286	9	19	energy	energy	NOUN
iogr-1286	9	20	sources	source	NOUN
iogr-1286	9	21	has	have	AUX
iogr-1286	9	22	become	become	VERB
iogr-1286	9	23	increasingly	increasingly	ADV
iogr-1286	9	24	urgent	urgent	ADJ
iogr-1286	9	25	.	.	PUNCT
iogr-1286	10	1	innovations	innovation	NOUN
iogr-1286	10	2	in	in	ADP
iogr-1286	10	3	the	the	DET
iogr-1286	10	4	petroleum	petroleum	NOUN
iogr-1286	10	5	industry	industry	NOUN
iogr-1286	10	6	have	have	AUX
iogr-1286	10	7	necessitated	necessitate	VERB
iogr-1286	10	8	the	the	DET
iogr-1286	10	9	development	development	NOUN
iogr-1286	10	10	of	of	ADP
iogr-1286	10	11	new	new	ADJ
iogr-1286	10	12	methods	method	NOUN
iogr-1286	10	13	to	to	PART
iogr-1286	10	14	exploit	exploit	VERB
iogr-1286	10	15	“	"	PUNCT
iogr-1286	10	16	unconventional	unconventional	ADJ
iogr-1286	10	17	”	"	PUNCT
iogr-1286	10	18	oil	oil	NOUN
iogr-1286	10	19	and	and	CCONJ
iogr-1286	10	20	gas	gas	NOUN
iogr-1286	10	21	reservoirs	reservoir	NOUN
iogr-1286	10	22	,	,	PUNCT
iogr-1286	10	23	which	which	PRON
iogr-1286	10	24	were	be	AUX
iogr-1286	10	25	previously	previously	ADV
iogr-1286	10	26	untapped	untapped	ADJ
iogr-1286	10	27	.	.	PUNCT
iogr-1286	11	1	according	accord	VERB
iogr-1286	11	2	to	to	ADP
iogr-1286	11	3	the	the	DET
iogr-1286	11	4	international	international	ADJ
iogr-1286	11	5	energy	energy	NOUN
iogr-1286	11	6	agency	agency	NOUN
iogr-1286	11	7	's	's	PART
iogr-1286	11	8	2011	2011	NUM
iogr-1286	11	9	world	world	NOUN
iogr-1286	11	10	energy	energy	NOUN
iogr-1286	11	11	outlook	outlook	NOUN
iogr-1286	11	12	,	,	PUNCT
iogr-1286	11	13	unconventional	unconventional	ADJ
iogr-1286	11	14	hydrocarbons	hydrocarbon	NOUN
iogr-1286	11	15	are	be	AUX
iogr-1286	11	16	those	those	PRON
iogr-1286	11	17	that	that	PRON
iogr-1286	11	18	can	can	AUX
iogr-1286	11	19	not	not	PART
iogr-1286	11	20	be	be	AUX
iogr-1286	11	21	extracted	extract	VERB
iogr-1286	11	22	in	in	ADP
iogr-1286	11	23	their	their	PRON
iogr-1286	11	24	natural	natural	ADJ
iogr-1286	11	25	state	state	NOUN
iogr-1286	11	26	from	from	ADP
iogr-1286	11	27	a	a	DET
iogr-1286	11	28	conventional	conventional	ADJ
iogr-1286	11	29	production	production	NOUN
iogr-1286	11	30	well	well	ADV
iogr-1286	11	31	without	without	ADP
iogr-1286	11	32	the	the	DET
iogr-1286	11	33	use	use	NOUN
iogr-1286	11	34	of	of	ADP
iogr-1286	11	35	heating	heating	NOUN
iogr-1286	11	36	or	or	CCONJ
iogr-1286	11	37	dilution	dilution	NOUN
iogr-1286	11	38	(	(	PUNCT
iogr-1286	11	39	wolfson	wolfson	PROPN
iogr-1286	11	40	2023	2023	NUM
iogr-1286	11	41	)	)	PUNCT
iogr-1286	11	42	.	.	PUNCT
iogr-1286	12	1	these	these	DET
iogr-1286	12	2	resources	resource	NOUN
iogr-1286	12	3	include	include	VERB
iogr-1286	12	4	coalbed	coalbe	VERB
iogr-1286	12	5	methane	methane	NOUN
iogr-1286	12	6	(	(	PUNCT
iogr-1286	12	7	cbm	cbm	PROPN
iogr-1286	12	8	)	)	PUNCT
iogr-1286	12	9	,	,	PUNCT
iogr-1286	12	10	shale	shale	NOUN
iogr-1286	12	11	gas	gas	NOUN
iogr-1286	12	12	,	,	PUNCT
iogr-1286	12	13	shale	shale	NOUN
iogr-1286	12	14	oil	oil	NOUN
iogr-1286	12	15	,	,	PUNCT
iogr-1286	12	16	tight	tight	ADJ
iogr-1286	12	17	gas	gas	NOUN
iogr-1286	12	18	,	,	PUNCT
iogr-1286	12	19	tight	tight	ADJ
iogr-1286	12	20	oil	oil	NOUN
iogr-1286	12	21	,	,	PUNCT
iogr-1286	12	22	coal	coal	NOUN
iogr-1286	12	23	seams	seam	NOUN
iogr-1286	12	24	,	,	PUNCT
iogr-1286	12	25	tar	tar	NOUN
iogr-1286	12	26	sands	sand	NOUN
iogr-1286	12	27	,	,	PUNCT
iogr-1286	12	28	and	and	CCONJ
iogr-1286	12	29	gas	gas	NOUN
iogr-1286	12	30	hydrates	hydrate	NOUN
iogr-1286	12	31	,	,	PUNCT
iogr-1286	12	32	all	all	PRON
iogr-1286	12	33	of	of	ADP
iogr-1286	12	34	which	which	PRON
iogr-1286	12	35	require	require	VERB
iogr-1286	12	36	advanced	advanced	ADJ
iogr-1286	12	37	energy	energy	NOUN
iogr-1286	12	38	and	and	CCONJ
iogr-1286	12	39	technology	technology	NOUN
iogr-1286	12	40	to	to	PART
iogr-1286	12	41	extract	extract	VERB
iogr-1286	12	42	.	.	PUNCT
iogr-1286	13	1	geologically	geologically	ADV
iogr-1286	13	2	,	,	PUNCT
iogr-1286	13	3	unconventional	unconventional	ADJ
iogr-1286	13	4	hydrocarbons	hydrocarbon	NOUN
iogr-1286	13	5	are	be	AUX
iogr-1286	13	6	solid	solid	ADJ
iogr-1286	13	7	,	,	PUNCT
iogr-1286	13	8	liquid	liquid	ADJ
iogr-1286	13	9	,	,	PUNCT
iogr-1286	13	10	or	or	CCONJ
iogr-1286	13	11	gaseous	gaseous	ADJ
iogr-1286	13	12	hydrocarbons	hydrocarbon	NOUN
iogr-1286	13	13	that	that	PRON
iogr-1286	13	14	originated	originate	VERB
iogr-1286	13	15	from	from	ADP
iogr-1286	13	16	organic	organic	ADJ
iogr-1286	13	17	compounds	compound	NOUN
iogr-1286	13	18	in	in	ADP
iogr-1286	13	19	source	source	NOUN
iogr-1286	13	20	rocks	rock	NOUN
iogr-1286	13	21	over	over	ADP
iogr-1286	13	22	geological	geological	ADJ
iogr-1286	13	23	time	time	NOUN
iogr-1286	13	24	and	and	CCONJ
iogr-1286	13	25	may	may	AUX
iogr-1286	13	26	have	have	VERB
iogr-1286	13	27	undergone	undergo	VERB
iogr-1286	13	28	changes	change	NOUN
iogr-1286	13	29	,	,	PUNCT
iogr-1286	13	30	especially	especially	ADV
iogr-1286	13	31	in	in	ADP
iogr-1286	13	32	the	the	DET
iogr-1286	13	33	case	case	NOUN
iogr-1286	13	34	of	of	ADP
iogr-1286	13	35	solid	solid	ADJ
iogr-1286	13	36	particles	particle	NOUN
iogr-1286	13	37	and	and	CCONJ
iogr-1286	13	38	extra	extra	ADJ
iogr-1286	13	39	-	-	ADJ
iogr-1286	13	40	heavy	heavy	ADJ
iogr-1286	13	41	liquids	liquid	NOUN
iogr-1286	13	42	(	(	PUNCT
iogr-1286	13	43	chew	chew	VERB
iogr-1286	13	44	2013	2013	NUM
iogr-1286	13	45	)	)	PUNCT
iogr-1286	13	46	.	.	PUNCT
iogr-1286	14	1	coalbed	coalbe	VERB
iogr-1286	14	2	methane	methane	NOUN
iogr-1286	14	3	(	(	PUNCT
iogr-1286	14	4	cbm	cbm	PROPN
iogr-1286	14	5	)	)	PUNCT
iogr-1286	14	6	is	be	AUX
iogr-1286	14	7	a	a	DET
iogr-1286	14	8	type	type	NOUN
iogr-1286	14	9	of	of	ADP
iogr-1286	14	10	natural	natural	ADJ
iogr-1286	14	11	gas	gas	NOUN
iogr-1286	14	12	primarily	primarily	ADV
iogr-1286	14	13	composed	compose	VERB
iogr-1286	14	14	of	of	ADP
iogr-1286	14	15	methane	methane	NOUN
iogr-1286	14	16	,	,	PUNCT
iogr-1286	14	17	found	find	VERB
iogr-1286	14	18	within	within	ADP
iogr-1286	14	19	coal	coal	NOUN
iogr-1286	14	20	seams	seam	NOUN
iogr-1286	14	21	.	.	PUNCT
iogr-1286	15	1	many	many	ADJ
iogr-1286	15	2	countries	country	NOUN
iogr-1286	15	3	possess	possess	VERB
iogr-1286	15	4	cbm	cbm	ADJ
iogr-1286	15	5	reserves	reserve	NOUN
iogr-1286	15	6	,	,	PUNCT
iogr-1286	15	7	but	but	CCONJ
iogr-1286	15	8	the	the	DET
iogr-1286	15	9	united	united	PROPN
iogr-1286	15	10	states	states	PROPN
iogr-1286	15	11	,	,	PUNCT
iogr-1286	15	12	canada	canada	PROPN
iogr-1286	15	13	,	,	PUNCT
iogr-1286	15	14	australia	australia	PROPN
iogr-1286	15	15	,	,	PUNCT
iogr-1286	15	16	china	china	PROPN
iogr-1286	15	17	,	,	PUNCT
iogr-1286	15	18	and	and	CCONJ
iogr-1286	15	19	india	india	PROPN
iogr-1286	15	20	are	be	AUX
iogr-1286	15	21	the	the	DET
iogr-1286	15	22	primary	primary	ADJ
iogr-1286	15	23	producers	producer	NOUN
iogr-1286	15	24	.	.	PUNCT
iogr-1286	16	1	according	accord	VERB
iogr-1286	16	2	to	to	ADP
iogr-1286	16	3	the	the	DET
iogr-1286	16	4	u.s	u.s	PROPN
iogr-1286	16	5	.	.	PROPN
iogr-1286	16	6	energy	energy	PROPN
iogr-1286	16	7	information	information	PROPN
iogr-1286	16	8	administration	administration	PROPN
iogr-1286	16	9	(	(	PUNCT
iogr-1286	16	10	energy	energy	NOUN
iogr-1286	16	11	information	information	NOUN
iogr-1286	16	12	administration	administration	NOUN
iogr-1286	16	13	2023	2023	NUM
iogr-1286	16	14	)	)	PUNCT
iogr-1286	16	15	,	,	PUNCT
iogr-1286	16	16	the	the	DET
iogr-1286	16	17	united	united	PROPN
iogr-1286	16	18	states	states	PROPN
iogr-1286	16	19	has	have	VERB
iogr-1286	16	20	approximately	approximately	ADV
iogr-1286	16	21	11,878	11,878	NUM
iogr-1286	16	22	billion	billion	NUM
iogr-1286	16	23	cubic	cubic	ADJ
iogr-1286	16	24	feet	foot	NOUN
iogr-1286	16	25	of	of	ADP
iogr-1286	16	26	proven	prove	VERB
iogr-1286	16	27	cbm	cbm	ADJ
iogr-1286	16	28	reserves	reserve	NOUN
iogr-1286	16	29	,	,	PUNCT
iogr-1286	16	30	leading	lead	VERB
iogr-1286	16	31	the	the	DET
iogr-1286	16	32	global	global	ADJ
iogr-1286	16	33	market	market	NOUN
iogr-1286	16	34	.	.	PUNCT
iogr-1286	17	1	the	the	DET
iogr-1286	17	2	profitability	profitability	NOUN
iogr-1286	17	3	of	of	ADP
iogr-1286	17	4	cbm	cbm	PROPN
iogr-1286	17	5	projects	project	NOUN
iogr-1286	17	6	in	in	ADP
iogr-1286	17	7	the	the	DET
iogr-1286	17	8	u.s	u.s	PROPN
iogr-1286	17	9	.	.	PROPN
iogr-1286	17	10	is	be	AUX
iogr-1286	17	11	influenced	influence	VERB
iogr-1286	17	12	by	by	ADP
iogr-1286	17	13	various	various	ADJ
iogr-1286	17	14	factors	factor	NOUN
iogr-1286	17	15	such	such	ADJ
iogr-1286	17	16	as	as	ADP
iogr-1286	17	17	seam	seam	NOUN
iogr-1286	17	18	thickness	thickness	NOUN
iogr-1286	17	19	,	,	PUNCT
iogr-1286	17	20	gas	gas	NOUN
iogr-1286	17	21	content	content	NOUN
iogr-1286	17	22	,	,	PUNCT
iogr-1286	17	23	methane	methane	NOUN
iogr-1286	17	24	content	content	NOUN
iogr-1286	17	25	,	,	PUNCT
iogr-1286	17	26	coal	coal	NOUN
iogr-1286	17	27	rank	rank	NOUN
iogr-1286	17	28	,	,	PUNCT
iogr-1286	17	29	and	and	CCONJ
iogr-1286	17	30	permeability	permeability	NOUN
iogr-1286	17	31	(	(	PUNCT
iogr-1286	17	32	green	green	PROPN
iogr-1286	17	33	et	et	PROPN
iogr-1286	17	34	al	al	PROPN
iogr-1286	17	35	.	.	PROPN
iogr-1286	17	36	2019	2019	NUM
iogr-1286	17	37	)	)	PUNCT
iogr-1286	17	38	.	.	PUNCT
iogr-1286	18	1	nigeria	nigeria	PROPN
iogr-1286	18	2	,	,	PUNCT
iogr-1286	18	3	with	with	ADP
iogr-1286	18	4	over	over	ADP
iogr-1286	18	5	2	2	NUM
iogr-1286	18	6	billion	billion	NUM
iogr-1286	18	7	metric	metric	ADJ
iogr-1286	18	8	tons	ton	NOUN
iogr-1286	18	9	of	of	ADP
iogr-1286	18	10	coal	coal	NOUN
iogr-1286	18	11	reserves	reserve	NOUN
iogr-1286	18	12	,	,	PUNCT
iogr-1286	18	13	including	include	VERB
iogr-1286	18	14	650	650	NUM
iogr-1286	18	15	million	million	NUM
iogr-1286	18	16	tons	ton	NOUN
iogr-1286	18	17	of	of	ADP
iogr-1286	18	18	proven	prove	VERB
iogr-1286	18	19	reserves	reserve	NOUN
iogr-1286	18	20	(	(	PUNCT
iogr-1286	18	21	bureau	bureau	NOUN
iogr-1286	18	22	of	of	ADP
iogr-1286	18	23	public	public	ADJ
iogr-1286	18	24	enterprises	enterprise	NOUN
iogr-1286	18	25	2006	2006	NUM
iogr-1286	18	26	)	)	PUNCT
iogr-1286	18	27	,	,	PUNCT
iogr-1286	18	28	has	have	VERB
iogr-1286	18	29	significant	significant	ADJ
iogr-1286	18	30	cbm	cbm	ADJ
iogr-1286	18	31	potential	potential	NOUN
iogr-1286	18	32	.	.	PUNCT
iogr-1286	19	1	despite	despite	SCONJ
iogr-1286	19	2	this	this	PRON
iogr-1286	19	3	,	,	PUNCT
iogr-1286	19	4	nigeria	nigeria	PROPN
iogr-1286	19	5	's	's	PART
iogr-1286	19	6	cbm	cbm	PROPN
iogr-1286	19	7	resources	resource	NOUN
iogr-1286	19	8	remain	remain	VERB
iogr-1286	19	9	largely	largely	ADV
iogr-1286	19	10	undeveloped	undeveloped	ADJ
iogr-1286	19	11	due	due	ADJ
iogr-1286	19	12	to	to	ADP
iogr-1286	19	13	insufficient	insufficient	ADJ
iogr-1286	19	14	research	research	NOUN
iogr-1286	19	15	into	into	ADP
iogr-1286	19	16	cbm	cbm	PROPN
iogr-1286	19	17	's	's	PART
iogr-1286	19	18	potential	potential	NOUN
iogr-1286	19	19	and	and	CCONJ
iogr-1286	19	20	the	the	DET
iogr-1286	19	21	lack	lack	NOUN
iogr-1286	19	22	of	of	ADP
iogr-1286	19	23	development	development	NOUN
iogr-1286	19	24	techniques	technique	NOUN
iogr-1286	19	25	to	to	PART
iogr-1286	19	26	optimize	optimize	VERB
iogr-1286	19	27	its	its	PRON
iogr-1286	19	28	production	production	NOUN
iogr-1286	19	29	.	.	PUNCT
iogr-1286	20	1	nigeria	nigeria	PROPN
iogr-1286	20	2	's	's	PART
iogr-1286	20	3	electricity	electricity	NOUN
iogr-1286	20	4	sector	sector	NOUN
iogr-1286	20	5	also	also	ADV
iogr-1286	20	6	faces	face	VERB
iogr-1286	20	7	challenges	challenge	NOUN
iogr-1286	20	8	;	;	PUNCT
iogr-1286	20	9	the	the	DET
iogr-1286	20	10	country	country	NOUN
iogr-1286	20	11	generates	generate	VERB
iogr-1286	20	12	between	between	ADP
iogr-1286	20	13	2,687	2,687	NUM
iogr-1286	20	14	and	and	CCONJ
iogr-1286	20	15	4,200	4,200	NUM
iogr-1286	20	16	megawatts	megawatt	NOUN
iogr-1286	20	17	of	of	ADP
iogr-1286	20	18	power	power	NOUN
iogr-1286	20	19	,	,	PUNCT
iogr-1286	20	20	far	far	ADV
iogr-1286	20	21	below	below	ADP
iogr-1286	20	22	the	the	DET
iogr-1286	20	23	peak	peak	NOUN
iogr-1286	20	24	demand	demand	NOUN
iogr-1286	20	25	of	of	ADP
iogr-1286	20	26	12,800	12,800	NUM
iogr-1286	20	27	megawatts	megawatt	NOUN
iogr-1286	20	28	.	.	PUNCT
iogr-1286	21	1	86	86	NUM
iogr-1286	21	2	%	%	NOUN
iogr-1286	21	3	of	of	ADP
iogr-1286	21	4	nigeria	nigeria	PROPN
iogr-1286	21	5	's	's	PART
iogr-1286	21	6	electricity	electricity	NOUN
iogr-1286	21	7	is	be	AUX
iogr-1286	21	8	currently	currently	ADV
iogr-1286	21	9	generated	generate	VERB
iogr-1286	21	10	from	from	ADP
iogr-1286	21	11	fossil	fossil	ADJ
iogr-1286	21	12	fuels	fuel	NOUN
iogr-1286	21	13	,	,	PUNCT
iogr-1286	21	14	particularly	particularly	ADV
iogr-1286	21	15	natural	natural	ADJ
iogr-1286	21	16	gas	gas	NOUN
iogr-1286	21	17	(	(	PUNCT
iogr-1286	21	18	barka	barka	NOUN
iogr-1286	21	19	and	and	CCONJ
iogr-1286	21	20	nur	nur	VERB
iogr-1286	21	21	2023	2023	NUM
iogr-1286	21	22	)	)	PUNCT
iogr-1286	21	23	.	.	PUNCT
iogr-1286	22	1	the	the	DET
iogr-1286	22	2	mailto:modibbo.edu@gmail.com	mailto:modibbo.edu@gmail.com	NOUN
iogr-1286	22	3	improved	improve	VERB
iogr-1286	22	4	oil	oil	NOUN
iogr-1286	22	5	and	and	CCONJ
iogr-1286	22	6	gas	gas	NOUN
iogr-1286	22	7	recovery	recovery	NOUN
iogr-1286	22	8	2	2	NUM
iogr-1286	22	9	decline	decline	NOUN
iogr-1286	22	10	in	in	ADP
iogr-1286	22	11	crude	crude	ADJ
iogr-1286	22	12	oil	oil	NOUN
iogr-1286	22	13	and	and	CCONJ
iogr-1286	22	14	natural	natural	ADJ
iogr-1286	22	15	gas	gas	NOUN
iogr-1286	22	16	production	production	NOUN
iogr-1286	22	17	threatens	threaten	VERB
iogr-1286	22	18	the	the	DET
iogr-1286	22	19	country	country	NOUN
iogr-1286	22	20	's	's	PART
iogr-1286	22	21	natural	natural	ADJ
iogr-1286	22	22	gas	gas	NOUN
iogr-1286	22	23	supply	supply	NOUN
iogr-1286	22	24	,	,	PUNCT
iogr-1286	22	25	which	which	PRON
iogr-1286	22	26	is	be	AUX
iogr-1286	22	27	crucial	crucial	ADJ
iogr-1286	22	28	for	for	ADP
iogr-1286	22	29	power	power	NOUN
iogr-1286	22	30	generation	generation	NOUN
iogr-1286	22	31	.	.	PUNCT
iogr-1286	23	1	cbm	cbm	PROPN
iogr-1286	23	2	,	,	PUNCT
iogr-1286	23	3	as	as	ADP
iogr-1286	23	4	a	a	DET
iogr-1286	23	5	clean	clean	ADJ
iogr-1286	23	6	source	source	NOUN
iogr-1286	23	7	of	of	ADP
iogr-1286	23	8	natural	natural	ADJ
iogr-1286	23	9	gas	gas	NOUN
iogr-1286	23	10	,	,	PUNCT
iogr-1286	23	11	offers	offer	VERB
iogr-1286	23	12	a	a	DET
iogr-1286	23	13	viable	viable	ADJ
iogr-1286	23	14	alternative	alternative	NOUN
iogr-1286	23	15	to	to	PART
iogr-1286	23	16	replace	replace	VERB
iogr-1286	23	17	natural	natural	ADJ
iogr-1286	23	18	gas	gas	NOUN
iogr-1286	23	19	as	as	ADP
iogr-1286	23	20	an	an	DET
iogr-1286	23	21	energy	energy	NOUN
iogr-1286	23	22	source	source	NOUN
iogr-1286	23	23	.	.	PUNCT
iogr-1286	24	1	this	this	DET
iogr-1286	24	2	research	research	NOUN
iogr-1286	24	3	aims	aim	VERB
iogr-1286	24	4	to	to	PART
iogr-1286	24	5	evaluate	evaluate	VERB
iogr-1286	24	6	the	the	DET
iogr-1286	24	7	potential	potential	NOUN
iogr-1286	24	8	of	of	ADP
iogr-1286	24	9	coalbed	coalbe	VERB
iogr-1286	24	10	methane	methane	NOUN
iogr-1286	24	11	(	(	PUNCT
iogr-1286	24	12	cbm	cbm	PROPN
iogr-1286	24	13	)	)	PUNCT
iogr-1286	24	14	development	development	NOUN
iogr-1286	24	15	in	in	ADP
iogr-1286	24	16	nigeria	nigeria	PROPN
iogr-1286	24	17	by	by	ADP
iogr-1286	24	18	analyzing	analyze	VERB
iogr-1286	24	19	the	the	DET
iogr-1286	24	20	physical	physical	ADJ
iogr-1286	24	21	properties	property	NOUN
iogr-1286	24	22	of	of	ADP
iogr-1286	24	23	coal	coal	NOUN
iogr-1286	24	24	.	.	PUNCT
iogr-1286	25	1	the	the	DET
iogr-1286	25	2	study	study	NOUN
iogr-1286	25	3	is	be	AUX
iogr-1286	25	4	divided	divide	VERB
iogr-1286	25	5	into	into	ADP
iogr-1286	25	6	two	two	NUM
iogr-1286	25	7	parts	part	NOUN
iogr-1286	25	8	:	:	PUNCT
iogr-1286	25	9	the	the	DET
iogr-1286	25	10	first	first	ADJ
iogr-1286	25	11	part	part	NOUN
iogr-1286	25	12	investigates	investigate	VERB
iogr-1286	25	13	the	the	DET
iogr-1286	25	14	potential	potential	NOUN
iogr-1286	25	15	of	of	ADP
iogr-1286	25	16	cbm	cbm	PROPN
iogr-1286	25	17	in	in	ADP
iogr-1286	25	18	nigeria	nigeria	PROPN
iogr-1286	25	19	by	by	ADP
iogr-1286	25	20	examining	examine	VERB
iogr-1286	25	21	coal	coal	NOUN
iogr-1286	25	22	quality	quality	NOUN
iogr-1286	25	23	parameters	parameter	NOUN
iogr-1286	25	24	such	such	ADJ
iogr-1286	25	25	as	as	ADP
iogr-1286	25	26	ash	ash	NOUN
iogr-1286	25	27	content	content	NOUN
iogr-1286	25	28	,	,	PUNCT
iogr-1286	25	29	moisture	moisture	NOUN
iogr-1286	25	30	content	content	NOUN
iogr-1286	25	31	,	,	PUNCT
iogr-1286	25	32	and	and	CCONJ
iogr-1286	25	33	volatile	volatile	ADJ
iogr-1286	25	34	matter	matter	NOUN
iogr-1286	25	35	.	.	PUNCT
iogr-1286	26	1	the	the	DET
iogr-1286	26	2	second	second	ADJ
iogr-1286	26	3	part	part	NOUN
iogr-1286	26	4	compares	compare	VERB
iogr-1286	26	5	the	the	DET
iogr-1286	26	6	quality	quality	NOUN
iogr-1286	26	7	of	of	ADP
iogr-1286	26	8	nigeria	nigeria	PROPN
iogr-1286	26	9	's	's	PART
iogr-1286	26	10	coal	coal	NOUN
iogr-1286	26	11	with	with	ADP
iogr-1286	26	12	that	that	PRON
iogr-1286	26	13	of	of	ADP
iogr-1286	26	14	other	other	ADJ
iogr-1286	26	15	cbm	cbm	ADJ
iogr-1286	26	16	-	-	PUNCT
iogr-1286	26	17	producing	produce	VERB
iogr-1286	26	18	countries	country	NOUN
iogr-1286	26	19	,	,	PUNCT
iogr-1286	26	20	including	include	VERB
iogr-1286	26	21	the	the	DET
iogr-1286	26	22	united	united	PROPN
iogr-1286	26	23	states	states	PROPN
iogr-1286	26	24	,	,	PUNCT
iogr-1286	26	25	china	china	PROPN
iogr-1286	26	26	,	,	PUNCT
iogr-1286	26	27	india	india	PROPN
iogr-1286	26	28	,	,	PUNCT
iogr-1286	26	29	and	and	CCONJ
iogr-1286	26	30	indonesia	indonesia	PROPN
iogr-1286	26	31	.	.	PUNCT
iogr-1286	27	1	literature	literature	PROPN
iogr-1286	27	2	review	review	PROPN
iogr-1286	27	3	coal	coal	NOUN
iogr-1286	27	4	characterization	characterization	NOUN
iogr-1286	27	5	.	.	PUNCT
iogr-1286	28	1	coal	coal	NOUN
iogr-1286	28	2	characteristics	characteristic	NOUN
iogr-1286	28	3	are	be	AUX
iogr-1286	28	4	determined	determine	VERB
iogr-1286	28	5	through	through	ADP
iogr-1286	28	6	various	various	ADJ
iogr-1286	28	7	methodologies	methodology	NOUN
iogr-1286	28	8	and	and	CCONJ
iogr-1286	28	9	analytical	analytical	ADJ
iogr-1286	28	10	tools	tool	NOUN
iogr-1286	28	11	that	that	PRON
iogr-1286	28	12	identify	identify	VERB
iogr-1286	28	13	both	both	CCONJ
iogr-1286	28	14	the	the	DET
iogr-1286	28	15	physical	physical	ADJ
iogr-1286	28	16	and	and	CCONJ
iogr-1286	28	17	chemical	chemical	NOUN
iogr-1286	28	18	properties	property	NOUN
iogr-1286	28	19	of	of	ADP
iogr-1286	28	20	coal	coal	NOUN
iogr-1286	28	21	.	.	PUNCT
iogr-1286	29	1	the	the	DET
iogr-1286	29	2	two	two	NUM
iogr-1286	29	3	primary	primary	ADJ
iogr-1286	29	4	methods	method	NOUN
iogr-1286	29	5	used	use	VERB
iogr-1286	29	6	for	for	ADP
iogr-1286	29	7	determining	determine	VERB
iogr-1286	29	8	coal	coal	NOUN
iogr-1286	29	9	quality	quality	NOUN
iogr-1286	29	10	are	be	AUX
iogr-1286	29	11	proximate	proximate	VERB
iogr-1286	29	12	analysis	analysis	NOUN
iogr-1286	29	13	and	and	CCONJ
iogr-1286	29	14	ultimate	ultimate	ADJ
iogr-1286	29	15	analysis	analysis	NOUN
iogr-1286	29	16	.	.	PUNCT
iogr-1286	30	1	proximate	proximate	VERB
iogr-1286	30	2	analysis	analysis	NOUN
iogr-1286	30	3	:	:	PUNCT
iogr-1286	30	4	this	this	DET
iogr-1286	30	5	method	method	NOUN
iogr-1286	30	6	estimates	estimate	VERB
iogr-1286	30	7	key	key	ADJ
iogr-1286	30	8	parameters	parameter	NOUN
iogr-1286	30	9	such	such	ADJ
iogr-1286	30	10	as	as	ADP
iogr-1286	30	11	calorific	calorific	ADJ
iogr-1286	30	12	value	value	NOUN
iogr-1286	30	13	,	,	PUNCT
iogr-1286	30	14	volatile	volatile	ADJ
iogr-1286	30	15	matter	matter	NOUN
iogr-1286	30	16	,	,	PUNCT
iogr-1286	30	17	fixed	fixed	ADJ
iogr-1286	30	18	carbon	carbon	NOUN
iogr-1286	30	19	,	,	PUNCT
iogr-1286	30	20	and	and	CCONJ
iogr-1286	30	21	moisture	moisture	NOUN
iogr-1286	30	22	content	content	NOUN
iogr-1286	30	23	in	in	ADP
iogr-1286	30	24	coal	coal	NOUN
iogr-1286	30	25	(	(	PUNCT
iogr-1286	30	26	ozbayoglu	ozbayoglu	NOUN
iogr-1286	30	27	2018	2018	NUM
iogr-1286	30	28	)	)	PUNCT
iogr-1286	30	29	.	.	PUNCT
iogr-1286	31	1	ultimate	ultimate	ADJ
iogr-1286	31	2	analysis	analysis	NOUN
iogr-1286	31	3	:	:	PUNCT
iogr-1286	31	4	this	this	DET
iogr-1286	31	5	method	method	NOUN
iogr-1286	31	6	independently	independently	ADV
iogr-1286	31	7	identifies	identify	VERB
iogr-1286	31	8	the	the	DET
iogr-1286	31	9	elemental	elemental	ADJ
iogr-1286	31	10	composition	composition	NOUN
iogr-1286	31	11	of	of	ADP
iogr-1286	31	12	coal	coal	NOUN
iogr-1286	31	13	,	,	PUNCT
iogr-1286	31	14	including	include	VERB
iogr-1286	31	15	carbon	carbon	NOUN
iogr-1286	31	16	,	,	PUNCT
iogr-1286	31	17	hydrogen	hydrogen	NOUN
iogr-1286	31	18	,	,	PUNCT
iogr-1286	31	19	nitrogen	nitrogen	NOUN
iogr-1286	31	20	,	,	PUNCT
iogr-1286	31	21	sulfur	sulfur	NOUN
iogr-1286	31	22	,	,	PUNCT
iogr-1286	31	23	and	and	CCONJ
iogr-1286	31	24	oxygen	oxygen	NOUN
iogr-1286	31	25	.	.	PUNCT
iogr-1286	32	1	the	the	DET
iogr-1286	32	2	results	result	NOUN
iogr-1286	32	3	are	be	AUX
iogr-1286	32	4	often	often	ADV
iogr-1286	32	5	presented	present	VERB
iogr-1286	32	6	as	as	ADP
iogr-1286	32	7	percentages	percentage	NOUN
iogr-1286	32	8	(	(	PUNCT
iogr-1286	32	9	sgs	sgs	PROPN
iogr-1286	32	10	corp	corp	PROPN
iogr-1286	32	11	2022	2022	NUM
iogr-1286	32	12	)	)	PUNCT
iogr-1286	32	13	.	.	PUNCT
iogr-1286	33	1	coal	coal	NOUN
iogr-1286	33	2	is	be	AUX
iogr-1286	33	3	categorized	categorize	VERB
iogr-1286	33	4	into	into	ADP
iogr-1286	33	5	four	four	NUM
iogr-1286	33	6	distinct	distinct	ADJ
iogr-1286	33	7	ranks	rank	NOUN
iogr-1286	33	8	based	base	VERB
iogr-1286	33	9	on	on	ADP
iogr-1286	33	10	its	its	PRON
iogr-1286	33	11	characteristics	characteristic	NOUN
iogr-1286	33	12	:	:	PUNCT
iogr-1286	33	13	anthracite	anthracite	NOUN
iogr-1286	33	14	,	,	PUNCT
iogr-1286	33	15	sub	sub	ADJ
iogr-1286	33	16	-	-	ADJ
iogr-1286	33	17	bituminous	bituminous	ADJ
iogr-1286	33	18	,	,	PUNCT
iogr-1286	33	19	bituminous	bituminous	ADJ
iogr-1286	33	20	,	,	PUNCT
iogr-1286	33	21	and	and	CCONJ
iogr-1286	33	22	lignite	lignite	NOUN
iogr-1286	33	23	,	,	PUNCT
iogr-1286	33	24	with	with	ADP
iogr-1286	33	25	lignite	lignite	ADJ
iogr-1286	33	26	being	be	AUX
iogr-1286	33	27	the	the	DET
iogr-1286	33	28	lowest	low	ADJ
iogr-1286	33	29	grade	grade	NOUN
iogr-1286	33	30	,	,	PUNCT
iogr-1286	33	31	as	as	SCONJ
iogr-1286	33	32	shown	show	VERB
iogr-1286	33	33	in	in	ADP
iogr-1286	33	34	table	table	NOUN
iogr-1286	33	35	1	1	NUM
iogr-1286	33	36	.	.	PUNCT
iogr-1286	34	1	the	the	DET
iogr-1286	34	2	ranking	ranking	NOUN
iogr-1286	34	3	of	of	ADP
iogr-1286	34	4	coal	coal	NOUN
iogr-1286	34	5	is	be	AUX
iogr-1286	34	6	primarily	primarily	ADV
iogr-1286	34	7	determined	determine	VERB
iogr-1286	34	8	by	by	ADP
iogr-1286	34	9	two	two	NUM
iogr-1286	34	10	factors	factor	NOUN
iogr-1286	34	11	:	:	PUNCT
iogr-1286	34	12	the	the	DET
iogr-1286	34	13	amount	amount	NOUN
iogr-1286	34	14	of	of	ADP
iogr-1286	34	15	thermal	thermal	ADJ
iogr-1286	34	16	energy	energy	NOUN
iogr-1286	34	17	it	it	PRON
iogr-1286	34	18	can	can	AUX
iogr-1286	34	19	provide	provide	VERB
iogr-1286	34	20	and	and	CCONJ
iogr-1286	34	21	the	the	DET
iogr-1286	34	22	types	type	NOUN
iogr-1286	34	23	and	and	CCONJ
iogr-1286	34	24	concentrations	concentration	NOUN
iogr-1286	34	25	of	of	ADP
iogr-1286	34	26	carbon	carbon	NOUN
iogr-1286	34	27	it	it	PRON
iogr-1286	34	28	contains	contain	VERB
iogr-1286	34	29	.	.	PUNCT
iogr-1286	35	1	the	the	DET
iogr-1286	35	2	quality	quality	NOUN
iogr-1286	35	3	of	of	ADP
iogr-1286	35	4	a	a	DET
iogr-1286	35	5	coal	coal	NOUN
iogr-1286	35	6	deposit	deposit	NOUN
iogr-1286	35	7	is	be	AUX
iogr-1286	35	8	influenced	influence	VERB
iogr-1286	35	9	by	by	ADP
iogr-1286	35	10	the	the	DET
iogr-1286	35	11	amount	amount	NOUN
iogr-1286	35	12	of	of	ADP
iogr-1286	35	13	pressure	pressure	NOUN
iogr-1286	35	14	and	and	CCONJ
iogr-1286	35	15	heat	heat	NOUN
iogr-1286	35	16	it	it	PRON
iogr-1286	35	17	has	have	AUX
iogr-1286	35	18	been	be	AUX
iogr-1286	35	19	subjected	subject	VERB
iogr-1286	35	20	to	to	ADP
iogr-1286	35	21	over	over	ADP
iogr-1286	35	22	time	time	NOUN
iogr-1286	35	23	(	(	PUNCT
iogr-1286	35	24	energy	energy	NOUN
iogr-1286	35	25	information	information	NOUN
iogr-1286	35	26	administration	administration	NOUN
iogr-1286	35	27	2022	2022	NUM
iogr-1286	35	28	)	)	PUNCT
iogr-1286	35	29	.	.	PUNCT
iogr-1286	36	1	table	table	NOUN
iogr-1286	36	2	1	1	NUM
iogr-1286	36	3	—	—	PUNCT
iogr-1286	36	4	coal	coal	NOUN
iogr-1286	36	5	rank	rank	NOUN
iogr-1286	36	6	system	system	NOUN
iogr-1286	36	7	(	(	PUNCT
iogr-1286	36	8	adapted	adapt	VERB
iogr-1286	36	9	from	from	ADP
iogr-1286	36	10	greb	greb	PROPN
iogr-1286	36	11	et	et	PROPN
iogr-1286	36	12	al	al	PROPN
iogr-1286	36	13	.	.	PROPN
iogr-1286	36	14	2017	2017	NUM
iogr-1286	36	15	)	)	PUNCT
iogr-1286	36	16	.	.	PUNCT
iogr-1286	37	1	global	global	ADJ
iogr-1286	37	2	coalbed	coalbe	VERB
iogr-1286	37	3	methane	methane	NOUN
iogr-1286	37	4	reserves	reserve	NOUN
iogr-1286	37	5	.	.	PUNCT
iogr-1286	38	1	as	as	ADP
iogr-1286	38	2	technology	technology	NOUN
iogr-1286	38	3	advances	advance	NOUN
iogr-1286	38	4	,	,	PUNCT
iogr-1286	38	5	the	the	DET
iogr-1286	38	6	global	global	ADJ
iogr-1286	38	7	demand	demand	NOUN
iogr-1286	38	8	for	for	ADP
iogr-1286	38	9	energy	energy	NOUN
iogr-1286	38	10	resources	resource	NOUN
iogr-1286	38	11	,	,	PUNCT
iogr-1286	38	12	particularly	particularly	ADV
iogr-1286	38	13	crude	crude	ADJ
iogr-1286	38	14	oil	oil	NOUN
iogr-1286	38	15	,	,	PUNCT
iogr-1286	38	16	continues	continue	VERB
iogr-1286	38	17	to	to	PART
iogr-1286	38	18	rise	rise	VERB
iogr-1286	38	19	.	.	PUNCT
iogr-1286	39	1	over	over	ADP
iogr-1286	39	2	the	the	DET
iogr-1286	39	3	past	past	ADJ
iogr-1286	39	4	decade	decade	NOUN
iogr-1286	39	5	,	,	PUNCT
iogr-1286	39	6	coalbed	coalbe	VERB
iogr-1286	39	7	methane	methane	NOUN
iogr-1286	39	8	(	(	PUNCT
iogr-1286	39	9	cbm	cbm	PROPN
iogr-1286	39	10	)	)	PUNCT
iogr-1286	39	11	,	,	PUNCT
iogr-1286	39	12	an	an	DET
iogr-1286	39	13	unconventional	unconventional	ADJ
iogr-1286	39	14	resource	resource	NOUN
iogr-1286	39	15	,	,	PUNCT
iogr-1286	39	16	has	have	AUX
iogr-1286	39	17	emerged	emerge	VERB
iogr-1286	39	18	as	as	ADP
iogr-1286	39	19	a	a	DET
iogr-1286	39	20	viable	viable	ADJ
iogr-1286	39	21	alternative	alternative	NOUN
iogr-1286	39	22	to	to	PART
iogr-1286	39	23	meet	meet	VERB
iogr-1286	39	24	the	the	DET
iogr-1286	39	25	increasing	increase	VERB
iogr-1286	39	26	energy	energy	NOUN
iogr-1286	39	27	needs	need	NOUN
iogr-1286	39	28	within	within	ADP
iogr-1286	39	29	the	the	DET
iogr-1286	39	30	global	global	ADJ
iogr-1286	39	31	energy	energy	NOUN
iogr-1286	39	32	mix	mix	NOUN
iogr-1286	39	33	.	.	PUNCT
iogr-1286	40	1	improved	improve	VERB
iogr-1286	40	2	oil	oil	NOUN
iogr-1286	40	3	and	and	CCONJ
iogr-1286	40	4	gas	gas	NOUN
iogr-1286	40	5	recovery	recovery	NOUN
iogr-1286	40	6	3	3	NUM
iogr-1286	40	7	this	this	DET
iogr-1286	40	8	growth	growth	NOUN
iogr-1286	40	9	in	in	ADP
iogr-1286	40	10	demand	demand	NOUN
iogr-1286	40	11	is	be	AUX
iogr-1286	40	12	driven	drive	VERB
iogr-1286	40	13	by	by	ADP
iogr-1286	40	14	the	the	DET
iogr-1286	40	15	expanding	expand	VERB
iogr-1286	40	16	global	global	ADJ
iogr-1286	40	17	economy	economy	NOUN
iogr-1286	40	18	and	and	CCONJ
iogr-1286	40	19	population	population	NOUN
iogr-1286	40	20	,	,	PUNCT
iogr-1286	40	21	which	which	PRON
iogr-1286	40	22	require	require	VERB
iogr-1286	40	23	a	a	DET
iogr-1286	40	24	consistent	consistent	ADJ
iogr-1286	40	25	and	and	CCONJ
iogr-1286	40	26	reliable	reliable	ADJ
iogr-1286	40	27	energy	energy	NOUN
iogr-1286	40	28	supply	supply	NOUN
iogr-1286	40	29	(	(	PUNCT
iogr-1286	40	30	ritchie	ritchie	PROPN
iogr-1286	40	31	et	et	PROPN
iogr-1286	40	32	al	al	PROPN
iogr-1286	40	33	.	.	PROPN
iogr-1286	40	34	2020	2020	NUM
iogr-1286	40	35	)	)	PUNCT
iogr-1286	40	36	.	.	PUNCT
iogr-1286	41	1	the	the	DET
iogr-1286	41	2	largest	large	ADJ
iogr-1286	41	3	cbm	cbm	ADJ
iogr-1286	41	4	reserves	reserve	NOUN
iogr-1286	41	5	are	be	AUX
iogr-1286	41	6	located	locate	VERB
iogr-1286	41	7	in	in	ADP
iogr-1286	41	8	countries	country	NOUN
iogr-1286	41	9	such	such	ADJ
iogr-1286	41	10	as	as	ADP
iogr-1286	41	11	russia	russia	PROPN
iogr-1286	41	12	,	,	PUNCT
iogr-1286	41	13	the	the	DET
iogr-1286	41	14	united	united	PROPN
iogr-1286	41	15	states	states	PROPN
iogr-1286	41	16	,	,	PUNCT
iogr-1286	41	17	china	china	PROPN
iogr-1286	41	18	,	,	PUNCT
iogr-1286	41	19	canada	canada	PROPN
iogr-1286	41	20	,	,	PUNCT
iogr-1286	41	21	australia	australia	PROPN
iogr-1286	41	22	,	,	PUNCT
iogr-1286	41	23	indonesia	indonesia	PROPN
iogr-1286	41	24	,	,	PUNCT
iogr-1286	41	25	poland	poland	PROPN
iogr-1286	41	26	,	,	PUNCT
iogr-1286	41	27	germany	germany	PROPN
iogr-1286	41	28	,	,	PUNCT
iogr-1286	41	29	and	and	CCONJ
iogr-1286	41	30	france	france	PROPN
iogr-1286	41	31	(	(	PUNCT
iogr-1286	41	32	mastalerz	mastalerz	NOUN
iogr-1286	41	33	2014	2014	NUM
iogr-1286	41	34	)	)	PUNCT
iogr-1286	41	35	.	.	PUNCT
iogr-1286	42	1	specifically	specifically	ADV
iogr-1286	42	2	,	,	PUNCT
iogr-1286	42	3	the	the	DET
iogr-1286	42	4	united	united	PROPN
iogr-1286	42	5	states	states	PROPN
iogr-1286	42	6	,	,	PUNCT
iogr-1286	42	7	canada	canada	PROPN
iogr-1286	42	8	,	,	PUNCT
iogr-1286	42	9	china	china	PROPN
iogr-1286	42	10	,	,	PUNCT
iogr-1286	42	11	australia	australia	PROPN
iogr-1286	42	12	,	,	PUNCT
iogr-1286	42	13	and	and	CCONJ
iogr-1286	42	14	russia	russia	PROPN
iogr-1286	42	15	hold	hold	VERB
iogr-1286	42	16	the	the	DET
iogr-1286	42	17	most	most	ADV
iogr-1286	42	18	significant	significant	ADJ
iogr-1286	42	19	cbm	cbm	ADJ
iogr-1286	42	20	reserves	reserve	NOUN
iogr-1286	42	21	(	(	PUNCT
iogr-1286	42	22	liu	liu	PROPN
iogr-1286	42	23	et	et	PROPN
iogr-1286	42	24	al	al	PROPN
iogr-1286	42	25	.	.	PROPN
iogr-1286	42	26	2023	2023	NUM
iogr-1286	42	27	)	)	PUNCT
iogr-1286	42	28	.	.	PUNCT
iogr-1286	43	1	the	the	DET
iogr-1286	43	2	estimated	estimate	VERB
iogr-1286	43	3	global	global	ADJ
iogr-1286	43	4	cbm	cbm	PROPN
iogr-1286	43	5	reserves	reserve	NOUN
iogr-1286	43	6	exceed	exceed	VERB
iogr-1286	43	7	229	229	NUM
iogr-1286	43	8	trillion	trillion	NUM
iogr-1286	43	9	cubic	cubic	ADJ
iogr-1286	43	10	meters	meter	NOUN
iogr-1286	43	11	,	,	PUNCT
iogr-1286	43	12	presenting	present	VERB
iogr-1286	43	13	promising	promise	VERB
iogr-1286	43	14	development	development	NOUN
iogr-1286	43	15	prospects	prospect	NOUN
iogr-1286	43	16	for	for	ADP
iogr-1286	43	17	this	this	DET
iogr-1286	43	18	unconventional	unconventional	ADJ
iogr-1286	43	19	natural	natural	ADJ
iogr-1286	43	20	gas	gas	NOUN
iogr-1286	43	21	resource	resource	NOUN
iogr-1286	43	22	(	(	PUNCT
iogr-1286	43	23	zhang	zhang	PROPN
iogr-1286	43	24	et	et	PROPN
iogr-1286	43	25	al	al	PROPN
iogr-1286	43	26	.	.	PROPN
iogr-1286	43	27	2021	2021	NUM
iogr-1286	43	28	)	)	PUNCT
iogr-1286	43	29	.	.	PUNCT
iogr-1286	44	1	australia	australia	PROPN
iogr-1286	44	2	has	have	AUX
iogr-1286	44	3	been	be	AUX
iogr-1286	44	4	actively	actively	ADV
iogr-1286	44	5	involved	involve	VERB
iogr-1286	44	6	in	in	ADP
iogr-1286	44	7	cbm	cbm	PROPN
iogr-1286	44	8	extraction	extraction	NOUN
iogr-1286	44	9	and	and	CCONJ
iogr-1286	44	10	is	be	AUX
iogr-1286	44	11	well	well	ADV
iogr-1286	44	12	-	-	PUNCT
iogr-1286	44	13	known	know	VERB
iogr-1286	44	14	for	for	ADP
iogr-1286	44	15	having	have	VERB
iogr-1286	44	16	significant	significant	ADJ
iogr-1286	44	17	reserves	reserve	NOUN
iogr-1286	44	18	of	of	ADP
iogr-1286	44	19	cbm	cbm	PROPN
iogr-1286	44	20	,	,	PUNCT
iogr-1286	44	21	which	which	PRON
iogr-1286	44	22	are	be	AUX
iogr-1286	44	23	expected	expect	VERB
iogr-1286	44	24	to	to	PART
iogr-1286	44	25	be	be	AUX
iogr-1286	44	26	between	between	ADP
iogr-1286	44	27	8.3	8.3	NUM
iogr-1286	44	28	to	to	PART
iogr-1286	44	29	14.3	14.3	NUM
iogr-1286	44	30	trillion	trillion	NUM
iogr-1286	44	31	cubic	cubic	ADJ
iogr-1286	44	32	meters	meter	NOUN
iogr-1286	44	33	(	(	PUNCT
iogr-1286	44	34	liu	liu	PROPN
iogr-1286	44	35	et	et	PROPN
iogr-1286	44	36	al	al	PROPN
iogr-1286	44	37	.	.	PROPN
iogr-1286	44	38	2023	2023	NUM
iogr-1286	44	39	)	)	PUNCT
iogr-1286	44	40	.	.	PUNCT
iogr-1286	45	1	the	the	DET
iogr-1286	45	2	nation	nation	NOUN
iogr-1286	45	3	's	's	PART
iogr-1286	45	4	emphasis	emphasis	NOUN
iogr-1286	45	5	on	on	ADP
iogr-1286	45	6	using	use	VERB
iogr-1286	45	7	cbm	cbm	PROPN
iogr-1286	45	8	as	as	ADP
iogr-1286	45	9	a	a	DET
iogr-1286	45	10	fuel	fuel	NOUN
iogr-1286	45	11	source	source	NOUN
iogr-1286	45	12	is	be	AUX
iogr-1286	45	13	consistent	consistent	ADJ
iogr-1286	45	14	with	with	ADP
iogr-1286	45	15	its	its	PRON
iogr-1286	45	16	dedication	dedication	NOUN
iogr-1286	45	17	to	to	ADP
iogr-1286	45	18	more	more	ADV
iogr-1286	45	19	environmentally	environmentally	ADV
iogr-1286	45	20	friendly	friendly	ADJ
iogr-1286	45	21	energy	energy	NOUN
iogr-1286	45	22	options	option	NOUN
iogr-1286	45	23	(	(	PUNCT
iogr-1286	45	24	martin	martin	PROPN
iogr-1286	45	25	et	et	PROPN
iogr-1286	45	26	al	al	PROPN
iogr-1286	45	27	.	.	PROPN
iogr-1286	45	28	2021	2021	NUM
iogr-1286	45	29	)	)	PUNCT
iogr-1286	45	30	.	.	PUNCT
iogr-1286	46	1	furthermore	furthermore	ADV
iogr-1286	46	2	,	,	PUNCT
iogr-1286	46	3	canada	canada	PROPN
iogr-1286	46	4	has	have	AUX
iogr-1286	46	5	been	be	AUX
iogr-1286	46	6	acknowledged	acknowledge	VERB
iogr-1286	46	7	for	for	ADP
iogr-1286	46	8	its	its	PRON
iogr-1286	46	9	involvement	involvement	NOUN
iogr-1286	46	10	in	in	ADP
iogr-1286	46	11	the	the	DET
iogr-1286	46	12	production	production	NOUN
iogr-1286	46	13	of	of	ADP
iogr-1286	46	14	cbm	cbm	PROPN
iogr-1286	46	15	,	,	PUNCT
iogr-1286	46	16	which	which	PRON
iogr-1286	46	17	adds	add	VERB
iogr-1286	46	18	to	to	ADP
iogr-1286	46	19	the	the	DET
iogr-1286	46	20	country	country	NOUN
iogr-1286	46	21	's	's	PART
iogr-1286	46	22	energy	energy	NOUN
iogr-1286	46	23	portfolio	portfolio	NOUN
iogr-1286	46	24	(	(	PUNCT
iogr-1286	46	25	cho	cho	NOUN
iogr-1286	46	26	et	et	PROPN
iogr-1286	46	27	al	al	PROPN
iogr-1286	46	28	.	.	PROPN
iogr-1286	46	29	2016	2016	NUM
iogr-1286	46	30	)	)	PUNCT
iogr-1286	46	31	.	.	PUNCT
iogr-1286	47	1	cbm	cbm	PROPN
iogr-1286	47	2	extraction	extraction	NOUN
iogr-1286	47	3	in	in	ADP
iogr-1286	47	4	china	china	PROPN
iogr-1286	47	5	saw	see	VERB
iogr-1286	47	6	its	its	PRON
iogr-1286	47	7	initial	initial	ADJ
iogr-1286	47	8	investigation	investigation	NOUN
iogr-1286	47	9	in	in	ADP
iogr-1286	47	10	the	the	DET
iogr-1286	47	11	1980s	1980	NOUN
iogr-1286	47	12	(	(	PUNCT
iogr-1286	47	13	yang	yang	PROPN
iogr-1286	47	14	1987	1987	NUM
iogr-1286	47	15	)	)	PUNCT
iogr-1286	47	16	and	and	CCONJ
iogr-1286	47	17	the	the	DET
iogr-1286	47	18	country	country	NOUN
iogr-1286	47	19	's	's	PART
iogr-1286	47	20	first	first	ADJ
iogr-1286	47	21	commercial	commercial	ADJ
iogr-1286	47	22	production	production	NOUN
iogr-1286	47	23	from	from	ADP
iogr-1286	47	24	a	a	DET
iogr-1286	47	25	cbm	cbm	PROPN
iogr-1286	48	1	well	well	INTJ
iogr-1286	48	2	did	do	AUX
iogr-1286	48	3	not	not	PART
iogr-1286	48	4	begin	begin	VERB
iogr-1286	48	5	until	until	ADP
iogr-1286	48	6	2003	2003	NUM
iogr-1286	48	7	(	(	PUNCT
iogr-1286	48	8	qin	qin	PROPN
iogr-1286	48	9	2006	2006	NUM
iogr-1286	48	10	)	)	PUNCT
iogr-1286	48	11	.	.	PUNCT
iogr-1286	49	1	china	china	PROPN
iogr-1286	49	2	has	have	AUX
iogr-1286	49	3	made	make	VERB
iogr-1286	49	4	notable	notable	ADJ
iogr-1286	49	5	strides	stride	NOUN
iogr-1286	49	6	in	in	ADP
iogr-1286	49	7	improving	improve	VERB
iogr-1286	49	8	cbm	cbm	ADJ
iogr-1286	49	9	production	production	NOUN
iogr-1286	49	10	techniques	technique	NOUN
iogr-1286	49	11	.	.	PUNCT
iogr-1286	50	1	drilling	drill	VERB
iogr-1286	50	2	cost	cost	NOUN
iogr-1286	50	3	reductions	reduction	NOUN
iogr-1286	50	4	and	and	CCONJ
iogr-1286	50	5	enhanced	enhance	VERB
iogr-1286	50	6	single	single	ADJ
iogr-1286	50	7	-	-	PUNCT
iogr-1286	50	8	well	well	NOUN
iogr-1286	50	9	output	output	NOUN
iogr-1286	50	10	have	have	AUX
iogr-1286	50	11	resulted	result	VERB
iogr-1286	50	12	from	from	ADP
iogr-1286	50	13	innovations	innovation	NOUN
iogr-1286	50	14	in	in	ADP
iogr-1286	50	15	completion	completion	NOUN
iogr-1286	50	16	technology	technology	NOUN
iogr-1286	50	17	,	,	PUNCT
iogr-1286	50	18	reservoir	reservoir	NOUN
iogr-1286	50	19	reconstruction	reconstruction	NOUN
iogr-1286	50	20	,	,	PUNCT
iogr-1286	50	21	and	and	CCONJ
iogr-1286	50	22	drilling	drilling	NOUN
iogr-1286	50	23	techniques	technique	NOUN
iogr-1286	50	24	(	(	PUNCT
iogr-1286	50	25	lu	lu	INTJ
iogr-1286	50	26	et	et	PROPN
iogr-1286	50	27	al	al	PROPN
iogr-1286	50	28	.	.	PROPN
iogr-1286	50	29	2021	2021	NUM
iogr-1286	50	30	)	)	PUNCT
iogr-1286	50	31	.	.	PUNCT
iogr-1286	51	1	more	more	ADJ
iogr-1286	51	2	than	than	ADP
iogr-1286	51	3	90	90	NUM
iogr-1286	51	4	%	%	NOUN
iogr-1286	51	5	of	of	ADP
iogr-1286	51	6	china	china	PROPN
iogr-1286	51	7	's	's	PART
iogr-1286	51	8	cbm	cbm	PROPN
iogr-1286	51	9	production	production	NOUN
iogr-1286	51	10	comes	come	VERB
iogr-1286	51	11	from	from	ADP
iogr-1286	51	12	high	high	ADJ
iogr-1286	51	13	-	-	PUNCT
iogr-1286	51	14	rank	rank	NOUN
iogr-1286	51	15	coal	coal	NOUN
iogr-1286	51	16	,	,	PUNCT
iogr-1286	51	17	making	make	VERB
iogr-1286	51	18	it	it	PRON
iogr-1286	51	19	an	an	DET
iogr-1286	51	20	essential	essential	ADJ
iogr-1286	51	21	component	component	NOUN
iogr-1286	51	22	of	of	ADP
iogr-1286	51	23	the	the	DET
iogr-1286	51	24	country	country	NOUN
iogr-1286	51	25	's	's	PART
iogr-1286	51	26	cbm	cbm	PROPN
iogr-1286	51	27	production	production	NOUN
iogr-1286	51	28	(	(	PUNCT
iogr-1286	51	29	liu	liu	PROPN
iogr-1286	51	30	et	et	PROPN
iogr-1286	51	31	al	al	PROPN
iogr-1286	51	32	.	.	PROPN
iogr-1286	51	33	2023	2023	NUM
iogr-1286	51	34	)	)	PUNCT
iogr-1286	51	35	.	.	PUNCT
iogr-1286	52	1	due	due	ADP
iogr-1286	52	2	to	to	ADP
iogr-1286	52	3	its	its	PRON
iogr-1286	52	4	substantial	substantial	ADJ
iogr-1286	52	5	cbm	cbm	ADJ
iogr-1286	52	6	reserves	reserve	NOUN
iogr-1286	52	7	,	,	PUNCT
iogr-1286	52	8	the	the	DET
iogr-1286	52	9	nation	nation	NOUN
iogr-1286	52	10	plays	play	VERB
iogr-1286	52	11	a	a	DET
iogr-1286	52	12	significant	significant	ADJ
iogr-1286	52	13	role	role	NOUN
iogr-1286	52	14	in	in	ADP
iogr-1286	52	15	the	the	DET
iogr-1286	52	16	worldwide	worldwide	ADJ
iogr-1286	52	17	cbm	cbm	PROPN
iogr-1286	52	18	industry	industry	NOUN
iogr-1286	52	19	(	(	PUNCT
iogr-1286	52	20	xia	xia	PROPN
iogr-1286	52	21	et	et	PROPN
iogr-1286	52	22	al	al	PROPN
iogr-1286	52	23	.	.	PROPN
iogr-1286	52	24	2019	2019	NUM
iogr-1286	52	25	)	)	PUNCT
iogr-1286	52	26	.	.	PUNCT
iogr-1286	53	1	globally	globally	ADV
iogr-1286	53	2	,	,	PUNCT
iogr-1286	53	3	coal	coal	NOUN
iogr-1286	53	4	remains	remain	VERB
iogr-1286	53	5	the	the	DET
iogr-1286	53	6	primary	primary	ADJ
iogr-1286	53	7	source	source	NOUN
iogr-1286	53	8	of	of	ADP
iogr-1286	53	9	electricity	electricity	NOUN
iogr-1286	53	10	generation	generation	NOUN
iogr-1286	53	11	on	on	ADP
iogr-1286	53	12	almost	almost	ADV
iogr-1286	53	13	every	every	PRON
iogr-1286	53	14	continent	continent	NOUN
iogr-1286	53	15	,	,	PUNCT
iogr-1286	53	16	providing	provide	VERB
iogr-1286	53	17	a	a	DET
iogr-1286	53	18	reliable	reliable	ADJ
iogr-1286	53	19	and	and	CCONJ
iogr-1286	53	20	secure	secure	ADJ
iogr-1286	53	21	supply	supply	NOUN
iogr-1286	53	22	of	of	ADP
iogr-1286	53	23	electricity	electricity	NOUN
iogr-1286	53	24	to	to	ADP
iogr-1286	53	25	both	both	CCONJ
iogr-1286	53	26	industrialized	industrialized	ADJ
iogr-1286	53	27	and	and	CCONJ
iogr-1286	53	28	developing	develop	VERB
iogr-1286	53	29	countries	country	NOUN
iogr-1286	53	30	(	(	PUNCT
iogr-1286	53	31	world	world	NOUN
iogr-1286	53	32	coal	coal	NOUN
iogr-1286	53	33	association	association	PROPN
iogr-1286	53	34	2012	2012	NUM
iogr-1286	53	35	)	)	PUNCT
iogr-1286	53	36	.	.	PUNCT
iogr-1286	54	1	the	the	DET
iogr-1286	54	2	properties	property	NOUN
iogr-1286	54	3	of	of	ADP
iogr-1286	54	4	coal	coal	NOUN
iogr-1286	54	5	,	,	PUNCT
iogr-1286	54	6	such	such	ADJ
iogr-1286	54	7	as	as	ADP
iogr-1286	54	8	ash	ash	NOUN
iogr-1286	54	9	content	content	NOUN
iogr-1286	54	10	,	,	PUNCT
iogr-1286	54	11	moisture	moisture	NOUN
iogr-1286	54	12	,	,	PUNCT
iogr-1286	54	13	fixed	fix	VERB
iogr-1286	54	14	carbon	carbon	NOUN
iogr-1286	54	15	percentage	percentage	NOUN
iogr-1286	54	16	,	,	PUNCT
iogr-1286	54	17	sulfur	sulfur	NOUN
iogr-1286	54	18	content	content	NOUN
iogr-1286	54	19	,	,	PUNCT
iogr-1286	54	20	tar	tar	NOUN
iogr-1286	54	21	and	and	CCONJ
iogr-1286	54	22	light	light	ADJ
iogr-1286	54	23	oil	oil	NOUN
iogr-1286	54	24	percentage	percentage	NOUN
iogr-1286	54	25	,	,	PUNCT
iogr-1286	54	26	etc	etc	X
iogr-1286	54	27	.	.	X
iogr-1286	54	28	,	,	PUNCT
iogr-1286	54	29	must	must	AUX
iogr-1286	54	30	be	be	AUX
iogr-1286	54	31	considered	consider	VERB
iogr-1286	54	32	to	to	PART
iogr-1286	54	33	optimize	optimize	VERB
iogr-1286	54	34	energy	energy	NOUN
iogr-1286	54	35	production	production	NOUN
iogr-1286	54	36	efficiency	efficiency	NOUN
iogr-1286	54	37	.	.	PUNCT
iogr-1286	55	1	coal	coal	NOUN
iogr-1286	55	2	reserve	reserve	PROPN
iogr-1286	55	3	in	in	ADP
iogr-1286	55	4	nigeria	nigeria	PROPN
iogr-1286	55	5	.	.	PUNCT
iogr-1286	56	1	in	in	ADP
iogr-1286	56	2	nigeria	nigeria	PROPN
iogr-1286	56	3	,	,	PUNCT
iogr-1286	56	4	significant	significant	ADJ
iogr-1286	56	5	coal	coal	NOUN
iogr-1286	56	6	deposits	deposit	NOUN
iogr-1286	56	7	are	be	AUX
iogr-1286	56	8	found	find	VERB
iogr-1286	56	9	across	across	ADP
iogr-1286	56	10	the	the	DET
iogr-1286	56	11	country	country	NOUN
iogr-1286	56	12	,	,	PUNCT
iogr-1286	56	13	particularly	particularly	ADV
iogr-1286	56	14	from	from	ADP
iogr-1286	56	15	the	the	DET
iogr-1286	56	16	southern	southern	ADJ
iogr-1286	56	17	to	to	ADP
iogr-1286	56	18	the	the	DET
iogr-1286	56	19	northeastern	northeastern	ADJ
iogr-1286	56	20	regions	region	NOUN
iogr-1286	56	21	,	,	PUNCT
iogr-1286	56	22	where	where	SCONJ
iogr-1286	56	23	there	there	PRON
iogr-1286	56	24	are	be	VERB
iogr-1286	56	25	primarily	primarily	ADV
iogr-1286	56	26	four	four	NUM
iogr-1286	56	27	coal	coal	NOUN
iogr-1286	56	28	mines	mine	NOUN
iogr-1286	56	29	.	.	PUNCT
iogr-1286	57	1	the	the	DET
iogr-1286	57	2	coal	coal	NOUN
iogr-1286	57	3	characteristics	characteristic	NOUN
iogr-1286	57	4	in	in	ADP
iogr-1286	57	5	each	each	PRON
iogr-1286	57	6	of	of	ADP
iogr-1286	57	7	these	these	DET
iogr-1286	57	8	basins	basin	NOUN
iogr-1286	57	9	may	may	AUX
iogr-1286	57	10	vary	vary	VERB
iogr-1286	57	11	,	,	PUNCT
iogr-1286	57	12	influencing	influence	VERB
iogr-1286	57	13	their	their	PRON
iogr-1286	57	14	suitability	suitability	NOUN
iogr-1286	57	15	for	for	ADP
iogr-1286	57	16	different	different	ADJ
iogr-1286	57	17	energy	energy	NOUN
iogr-1286	57	18	production	production	NOUN
iogr-1286	57	19	methods	method	NOUN
iogr-1286	57	20	.	.	PUNCT
iogr-1286	58	1	nigeria	nigeria	PROPN
iogr-1286	58	2	is	be	AUX
iogr-1286	58	3	estimated	estimate	VERB
iogr-1286	58	4	to	to	PART
iogr-1286	58	5	have	have	VERB
iogr-1286	58	6	2.5	2.5	NUM
iogr-1286	58	7	gigatons	gigaton	NOUN
iogr-1286	58	8	(	(	PUNCT
iogr-1286	58	9	gt	gt	INTJ
iogr-1286	58	10	)	)	PUNCT
iogr-1286	58	11	of	of	ADP
iogr-1286	58	12	proven	prove	VERB
iogr-1286	58	13	coal	coal	NOUN
iogr-1286	58	14	reserves	reserve	NOUN
iogr-1286	58	15	.	.	PUNCT
iogr-1286	59	1	approximately	approximately	ADV
iogr-1286	59	2	90	90	NUM
iogr-1286	59	3	%	%	NOUN
iogr-1286	59	4	of	of	ADP
iogr-1286	59	5	these	these	DET
iogr-1286	59	6	deposits	deposit	NOUN
iogr-1286	59	7	are	be	AUX
iogr-1286	59	8	composed	compose	VERB
iogr-1286	59	9	of	of	ADP
iogr-1286	59	10	sub	sub	ADJ
iogr-1286	59	11	-	-	ADJ
iogr-1286	59	12	bituminous	bituminous	ADJ
iogr-1286	59	13	and	and	CCONJ
iogr-1286	59	14	bituminous	bituminous	ADJ
iogr-1286	59	15	coals	coal	NOUN
iogr-1286	59	16	,	,	PUNCT
iogr-1286	59	17	with	with	ADP
iogr-1286	59	18	the	the	DET
iogr-1286	59	19	remaining	remain	VERB
iogr-1286	59	20	10	10	NUM
iogr-1286	59	21	%	%	NOUN
iogr-1286	59	22	being	be	AUX
iogr-1286	59	23	lignite	lignite	ADJ
iogr-1286	59	24	.	.	PUNCT
iogr-1286	60	1	these	these	DET
iogr-1286	60	2	coal	coal	NOUN
iogr-1286	60	3	deposits	deposit	NOUN
iogr-1286	60	4	are	be	AUX
iogr-1286	60	5	located	locate	VERB
iogr-1286	60	6	in	in	ADP
iogr-1286	60	7	the	the	DET
iogr-1286	60	8	lower	low	ADJ
iogr-1286	60	9	,	,	PUNCT
iogr-1286	60	10	middle	middle	ADJ
iogr-1286	60	11	,	,	PUNCT
iogr-1286	60	12	and	and	CCONJ
iogr-1286	60	13	upper	upper	ADJ
iogr-1286	60	14	benue	benue	NOUN
iogr-1286	60	15	troughs	troughs	NOUN
iogr-1286	60	16	.	.	PUNCT
iogr-1286	61	1	lignite	lignite	NOUN
iogr-1286	61	2	and	and	CCONJ
iogr-1286	61	3	sub	sub	ADJ
iogr-1286	61	4	-	-	ADJ
iogr-1286	61	5	bituminous	bituminous	ADJ
iogr-1286	61	6	coals	coal	NOUN
iogr-1286	61	7	are	be	AUX
iogr-1286	61	8	predominant	predominant	ADJ
iogr-1286	61	9	in	in	ADP
iogr-1286	61	10	the	the	DET
iogr-1286	61	11	lower	low	ADJ
iogr-1286	61	12	and	and	CCONJ
iogr-1286	61	13	upper	upper	ADJ
iogr-1286	61	14	troughs	trough	NOUN
iogr-1286	61	15	,	,	PUNCT
iogr-1286	61	16	while	while	SCONJ
iogr-1286	61	17	high	high	ADJ
iogr-1286	61	18	-	-	PUNCT
iogr-1286	61	19	volatile	volatile	ADJ
iogr-1286	61	20	bituminous	bituminous	ADJ
iogr-1286	61	21	coals	coal	NOUN
iogr-1286	61	22	are	be	AUX
iogr-1286	61	23	more	more	ADV
iogr-1286	61	24	common	common	ADJ
iogr-1286	61	25	in	in	ADP
iogr-1286	61	26	the	the	DET
iogr-1286	61	27	middle	middle	ADJ
iogr-1286	61	28	trough	trough	NOUN
iogr-1286	61	29	.	.	PUNCT
iogr-1286	62	1	significant	significant	ADJ
iogr-1286	62	2	coal	coal	NOUN
iogr-1286	62	3	sites	site	NOUN
iogr-1286	62	4	include	include	VERB
iogr-1286	62	5	lafia	lafia	NOUN
iogr-1286	62	6	-	-	PUNCT
iogr-1286	62	7	obi	obi	NOUN
iogr-1286	62	8	in	in	ADP
iogr-1286	62	9	the	the	DET
iogr-1286	62	10	middle	middle	ADJ
iogr-1286	62	11	trough	trough	NOUN
iogr-1286	62	12	,	,	PUNCT
iogr-1286	62	13	and	and	CCONJ
iogr-1286	62	14	the	the	DET
iogr-1286	62	15	onyeama	onyeama	NOUN
iogr-1286	62	16	and	and	CCONJ
iogr-1286	62	17	okaba	okaba	ADJ
iogr-1286	62	18	mines	mine	NOUN
iogr-1286	62	19	in	in	ADP
iogr-1286	62	20	the	the	DET
iogr-1286	62	21	lower	low	ADJ
iogr-1286	62	22	trough	trough	NOUN
iogr-1286	62	23	(	(	PUNCT
iogr-1286	62	24	oboirien	oboirien	NOUN
iogr-1286	62	25	et	et	PROPN
iogr-1286	62	26	al	al	PROPN
iogr-1286	62	27	.	.	PROPN
iogr-1286	62	28	2018	2018	NUM
iogr-1286	62	29	)	)	PUNCT
iogr-1286	62	30	.	.	PUNCT
iogr-1286	63	1	nigeria	nigeria	PROPN
iogr-1286	63	2	is	be	AUX
iogr-1286	63	3	home	home	ADV
iogr-1286	63	4	to	to	ADP
iogr-1286	63	5	over	over	ADP
iogr-1286	63	6	23	23	NUM
iogr-1286	63	7	coal	coal	NOUN
iogr-1286	63	8	mines	mine	NOUN
iogr-1286	63	9	(	(	PUNCT
iogr-1286	63	10	oboirien	oboirien	PROPN
iogr-1286	63	11	et	et	PROPN
iogr-1286	63	12	al	al	PROPN
iogr-1286	63	13	.	.	PROPN
iogr-1286	63	14	2018	2018	NUM
iogr-1286	63	15	)	)	PUNCT
iogr-1286	63	16	.	.	PUNCT
iogr-1286	64	1	according	accord	VERB
iogr-1286	64	2	to	to	ADP
iogr-1286	64	3	the	the	DET
iogr-1286	64	4	nigerian	nigerian	ADJ
iogr-1286	64	5	coal	coal	NOUN
iogr-1286	64	6	corporation	corporation	NOUN
iogr-1286	64	7	,	,	PUNCT
iogr-1286	64	8	four	four	NUM
iogr-1286	64	9	underground	underground	ADJ
iogr-1286	64	10	mines	mine	NOUN
iogr-1286	64	11	—	—	PUNCT
iogr-1286	64	12	okpara	okpara	NOUN
iogr-1286	64	13	and	and	CCONJ
iogr-1286	64	14	onyeama	onyeama	NOUN
iogr-1286	64	15	in	in	ADP
iogr-1286	64	16	enugu	enugu	PROPN
iogr-1286	64	17	state	state	PROPN
iogr-1286	64	18	,	,	PUNCT
iogr-1286	64	19	okaba	okaba	ADJ
iogr-1286	64	20	in	in	ADP
iogr-1286	64	21	kogi	kogi	PROPN
iogr-1286	64	22	state	state	PROPN
iogr-1286	64	23	,	,	PUNCT
iogr-1286	64	24	and	and	CCONJ
iogr-1286	64	25	owukpa	owukpa	VERB
iogr-1286	64	26	in	in	ADP
iogr-1286	64	27	benue	benue	NOUN
iogr-1286	64	28	state	state	NOUN
iogr-1286	64	29	—	—	PUNCT
iogr-1286	64	30	are	be	AUX
iogr-1286	64	31	currently	currently	ADV
iogr-1286	64	32	producing	produce	VERB
iogr-1286	64	33	coal	coal	NOUN
iogr-1286	64	34	.	.	PUNCT
iogr-1286	65	1	additionally	additionally	ADV
iogr-1286	65	2	,	,	PUNCT
iogr-1286	65	3	there	there	PRON
iogr-1286	65	4	are	be	VERB
iogr-1286	65	5	13	13	NUM
iogr-1286	65	6	untapped	untapped	ADJ
iogr-1286	65	7	coal	coal	NOUN
iogr-1286	65	8	reserves	reserve	NOUN
iogr-1286	65	9	.	.	PUNCT
iogr-1286	66	1	nigeria	nigeria	PROPN
iogr-1286	66	2	's	's	PART
iogr-1286	66	3	primary	primary	ADJ
iogr-1286	66	4	coal	coal	NOUN
iogr-1286	66	5	reserves	reserve	NOUN
iogr-1286	66	6	are	be	AUX
iogr-1286	66	7	found	find	VERB
iogr-1286	66	8	in	in	ADP
iogr-1286	66	9	the	the	DET
iogr-1286	66	10	cretaceous	cretaceous	ADJ
iogr-1286	66	11	anambra	anambra	PROPN
iogr-1286	66	12	basin	basin	NOUN
iogr-1286	66	13	to	to	PART
iogr-1286	66	14	benue	benue	VERB
iogr-1286	66	15	basin	basin	NOUN
iogr-1286	66	16	of	of	ADP
iogr-1286	66	17	bakina	bakina	PROPN
iogr-1286	66	18	and	and	CCONJ
iogr-1286	66	19	okigwe	okigwe	ADJ
iogr-1286	66	20	city	city	NOUN
iogr-1286	66	21	of	of	ADP
iogr-1286	66	22	imo	imo	PROPN
iogr-1286	66	23	state	state	PROPN
iogr-1286	66	24	.	.	PUNCT
iogr-1286	67	1	the	the	DET
iogr-1286	67	2	coal	coal	NOUN
iogr-1286	67	3	in	in	ADP
iogr-1286	67	4	this	this	DET
iogr-1286	67	5	area	area	NOUN
iogr-1286	67	6	is	be	AUX
iogr-1286	67	7	mostly	mostly	ADV
iogr-1286	67	8	found	find	VERB
iogr-1286	67	9	at	at	ADP
iogr-1286	67	10	the	the	DET
iogr-1286	67	11	lower	low	ADJ
iogr-1286	67	12	to	to	ADP
iogr-1286	67	13	upper	upper	ADJ
iogr-1286	67	14	grade	grade	NOUN
iogr-1286	67	15	of	of	ADP
iogr-1286	67	16	coal	coal	NOUN
iogr-1286	67	17	type	type	NOUN
iogr-1286	67	18	(	(	PUNCT
iogr-1286	67	19	adedosu	adedosu	PROPN
iogr-1286	67	20	et	et	PROPN
iogr-1286	67	21	al	al	PROPN
iogr-1286	67	22	.	.	PROPN
iogr-1286	67	23	2007	2007	NUM
iogr-1286	67	24	)	)	PUNCT
iogr-1286	67	25	.	.	PUNCT
iogr-1286	68	1	the	the	DET
iogr-1286	68	2	enugu	enugu	PROPN
iogr-1286	68	3	coalfield	coalfield	PROPN
iogr-1286	68	4	,	,	PUNCT
iogr-1286	68	5	particularly	particularly	ADV
iogr-1286	68	6	the	the	DET
iogr-1286	68	7	okpara	okpara	NOUN
iogr-1286	68	8	and	and	CCONJ
iogr-1286	68	9	onyeama	onyeama	NOUN
iogr-1286	68	10	underground	underground	ADJ
iogr-1286	68	11	mines	mine	NOUN
iogr-1286	68	12	,	,	PUNCT
iogr-1286	68	13	is	be	AUX
iogr-1286	68	14	abundant	abundant	ADJ
iogr-1286	68	15	in	in	ADP
iogr-1286	68	16	coal	coal	NOUN
iogr-1286	68	17	.	.	PUNCT
iogr-1286	69	1	these	these	DET
iogr-1286	69	2	basins	basin	NOUN
iogr-1286	69	3	are	be	AUX
iogr-1286	69	4	part	part	NOUN
iogr-1286	69	5	of	of	ADP
iogr-1286	69	6	the	the	DET
iogr-1286	69	7	eastern	eastern	ADJ
iogr-1286	69	8	extension	extension	NOUN
iogr-1286	69	9	of	of	ADP
iogr-1286	69	10	the	the	DET
iogr-1286	69	11	cretaceous	cretaceous	ADJ
iogr-1286	69	12	sedimentary	sedimentary	ADJ
iogr-1286	69	13	basin	basin	NOUN
iogr-1286	69	14	(	(	PUNCT
iogr-1286	69	15	synclinorium	synclinorium	NOUN
iogr-1286	69	16	)	)	PUNCT
iogr-1286	69	17	.	.	PUNCT
iogr-1286	70	1	the	the	DET
iogr-1286	70	2	onyeama	onyeama	NOUN
iogr-1286	70	3	seam	seam	NOUN
iogr-1286	70	4	,	,	PUNCT
iogr-1286	70	5	for	for	ADP
iogr-1286	70	6	instance	instance	NOUN
iogr-1286	70	7	,	,	PUNCT
iogr-1286	70	8	is	be	AUX
iogr-1286	70	9	located	locate	VERB
iogr-1286	70	10	where	where	SCONJ
iogr-1286	70	11	the	the	DET
iogr-1286	70	12	asata	asata	PROPN
iogr-1286	70	13	river	river	NOUN
iogr-1286	70	14	cuts	cut	VERB
iogr-1286	70	15	through	through	ADP
iogr-1286	70	16	the	the	DET
iogr-1286	70	17	enugu	enugu	PROPN
iogr-1286	70	18	escarpment	escarpment	PROPN
iogr-1286	70	19	(	(	PUNCT
iogr-1286	70	20	adedosu	adedosu	PROPN
iogr-1286	70	21	et	et	PROPN
iogr-1286	70	22	al	al	PROPN
iogr-1286	70	23	.	.	PROPN
iogr-1286	70	24	2010	2010	NUM
iogr-1286	70	25	)	)	PUNCT
iogr-1286	70	26	.	.	PUNCT
iogr-1286	71	1	orukpa	orukpa	NOUN
iogr-1286	71	2	and	and	CCONJ
iogr-1286	71	3	okaba	okaba	ADJ
iogr-1286	71	4	,	,	PUNCT
iogr-1286	71	5	both	both	DET
iogr-1286	71	6	surface	surface	NOUN
iogr-1286	71	7	mines	mine	NOUN
iogr-1286	71	8	,	,	PUNCT
iogr-1286	71	9	are	be	AUX
iogr-1286	71	10	located	locate	VERB
iogr-1286	71	11	in	in	ADP
iogr-1286	71	12	the	the	DET
iogr-1286	71	13	north	north	NOUN
iogr-1286	71	14	-	-	PUNCT
iogr-1286	71	15	central	central	ADJ
iogr-1286	71	16	states	state	NOUN
iogr-1286	71	17	of	of	ADP
iogr-1286	71	18	benue	benue	PROPN
iogr-1286	71	19	and	and	CCONJ
iogr-1286	71	20	kogi	kogi	PROPN
iogr-1286	71	21	(	(	PUNCT
iogr-1286	71	22	olaleye	olaleye	PROPN
iogr-1286	71	23	et	et	PROPN
iogr-1286	71	24	al	al	PROPN
iogr-1286	71	25	.	.	PROPN
iogr-1286	71	26	2009	2009	NUM
iogr-1286	71	27	)	)	PUNCT
iogr-1286	71	28	.	.	PUNCT
iogr-1286	72	1	the	the	DET
iogr-1286	72	2	basic	basic	ADJ
iogr-1286	72	3	components	component	NOUN
iogr-1286	72	4	of	of	ADP
iogr-1286	72	5	okaba	okaba	ADJ
iogr-1286	72	6	coal	coal	NOUN
iogr-1286	72	7	and	and	CCONJ
iogr-1286	72	8	shale	shale	NOUN
iogr-1286	72	9	are	be	AUX
iogr-1286	72	10	more	more	ADV
iogr-1286	72	11	abundant	abundant	ADJ
iogr-1286	72	12	than	than	ADP
iogr-1286	72	13	global	global	ADJ
iogr-1286	72	14	averages	average	NOUN
iogr-1286	72	15	,	,	PUNCT
iogr-1286	72	16	although	although	SCONJ
iogr-1286	72	17	the	the	DET
iogr-1286	72	18	trace	trace	NOUN
iogr-1286	72	19	amounts	amount	VERB
iogr-1286	72	20	of	of	ADP
iogr-1286	72	21	heavy	heavy	ADJ
iogr-1286	72	22	metals	metal	NOUN
iogr-1286	72	23	are	be	AUX
iogr-1286	72	24	well	well	ADV
iogr-1286	72	25	below	below	ADP
iogr-1286	72	26	coal	coal	NOUN
iogr-1286	72	27	quality	quality	NOUN
iogr-1286	72	28	standards	standard	NOUN
iogr-1286	72	29	.	.	PUNCT
iogr-1286	73	1	okaba	okaba	ADJ
iogr-1286	73	2	coal	coal	NOUN
iogr-1286	73	3	has	have	VERB
iogr-1286	73	4	an	an	DET
iogr-1286	73	5	average	average	ADJ
iogr-1286	73	6	moisture	moisture	NOUN
iogr-1286	73	7	content	content	NOUN
iogr-1286	73	8	of	of	ADP
iogr-1286	73	9	12.51	12.51	NUM
iogr-1286	73	10	%	%	NOUN
iogr-1286	73	11	,	,	PUNCT
iogr-1286	73	12	an	an	DET
iogr-1286	73	13	ash	ash	NOUN
iogr-1286	73	14	content	content	NOUN
iogr-1286	73	15	of	of	ADP
iogr-1286	73	16	11.48	11.48	NUM
iogr-1286	73	17	%	%	NOUN
iogr-1286	73	18	,	,	PUNCT
iogr-1286	73	19	and	and	CCONJ
iogr-1286	73	20	a	a	DET
iogr-1286	73	21	volatile	volatile	ADJ
iogr-1286	73	22	matter	matter	NOUN
iogr-1286	73	23	content	content	NOUN
iogr-1286	73	24	of	of	ADP
iogr-1286	73	25	47.49	47.49	NUM
iogr-1286	73	26	%	%	NOUN
iogr-1286	73	27	(	(	PUNCT
iogr-1286	73	28	fatoye	fatoye	VERB
iogr-1286	73	29	et	et	PROPN
iogr-1286	73	30	al	al	PROPN
iogr-1286	73	31	.	.	PROPN
iogr-1286	73	32	2012	2012	NUM
iogr-1286	73	33	)	)	PUNCT
iogr-1286	73	34	.	.	PUNCT
iogr-1286	74	1	improved	improve	VERB
iogr-1286	74	2	oil	oil	NOUN
iogr-1286	74	3	and	and	CCONJ
iogr-1286	74	4	gas	gas	NOUN
iogr-1286	74	5	recovery	recovery	NOUN
iogr-1286	74	6	4	4	NUM
iogr-1286	74	7	methodology	methodology	NOUN
iogr-1286	74	8	study	study	NOUN
iogr-1286	74	9	area	area	NOUN
iogr-1286	74	10	.	.	PUNCT
iogr-1286	75	1	this	this	DET
iogr-1286	75	2	study	study	NOUN
iogr-1286	75	3	primarily	primarily	ADV
iogr-1286	75	4	focuses	focus	VERB
iogr-1286	75	5	on	on	ADP
iogr-1286	75	6	four	four	NUM
iogr-1286	75	7	of	of	ADP
iogr-1286	75	8	nigeria	nigeria	PROPN
iogr-1286	75	9	's	's	PART
iogr-1286	75	10	cbm	cbm	PROPN
iogr-1286	75	11	basins	basin	NOUN
iogr-1286	75	12	:	:	PUNCT
iogr-1286	75	13	okpara	okpara	NOUN
iogr-1286	75	14	,	,	PUNCT
iogr-1286	75	15	onyeama	onyeama	NOUN
iogr-1286	75	16	,	,	PUNCT
iogr-1286	75	17	okaba	okaba	ADJ
iogr-1286	75	18	,	,	PUNCT
iogr-1286	75	19	and	and	CCONJ
iogr-1286	75	20	owukpa	owukpa	ADJ
iogr-1286	75	21	.	.	PUNCT
iogr-1286	76	1	all	all	PRON
iogr-1286	76	2	of	of	ADP
iogr-1286	76	3	these	these	DET
iogr-1286	76	4	basins	basin	NOUN
iogr-1286	76	5	are	be	AUX
iogr-1286	76	6	located	locate	VERB
iogr-1286	76	7	along	along	ADP
iogr-1286	76	8	or	or	CCONJ
iogr-1286	76	9	near	near	ADP
iogr-1286	76	10	the	the	DET
iogr-1286	76	11	river	river	NOUN
iogr-1286	76	12	benue	benue	VERB
iogr-1286	76	13	channel	channel	NOUN
iogr-1286	76	14	.	.	PUNCT
iogr-1286	77	1	the	the	DET
iogr-1286	77	2	okpara	okpara	NOUN
iogr-1286	77	3	and	and	CCONJ
iogr-1286	77	4	onyeama	onyeama	NOUN
iogr-1286	77	5	basins	basin	NOUN
iogr-1286	77	6	,	,	PUNCT
iogr-1286	77	7	which	which	PRON
iogr-1286	77	8	show	show	VERB
iogr-1286	77	9	significant	significant	ADJ
iogr-1286	77	10	potential	potential	NOUN
iogr-1286	77	11	,	,	PUNCT
iogr-1286	77	12	are	be	AUX
iogr-1286	77	13	located	locate	VERB
iogr-1286	77	14	in	in	ADP
iogr-1286	77	15	enugu	enugu	PROPN
iogr-1286	77	16	state	state	PROPN
iogr-1286	77	17	in	in	ADP
iogr-1286	77	18	southeastern	southeastern	PROPN
iogr-1286	77	19	nigeria	nigeria	PROPN
iogr-1286	77	20	,	,	PUNCT
iogr-1286	77	21	covering	cover	VERB
iogr-1286	77	22	an	an	DET
iogr-1286	77	23	area	area	NOUN
iogr-1286	77	24	of	of	ADP
iogr-1286	77	25	over	over	ADP
iogr-1286	77	26	667,000	667,000	NUM
iogr-1286	77	27	acres	acre	NOUN
iogr-1286	77	28	.	.	PUNCT
iogr-1286	78	1	figure	figure	NOUN
iogr-1286	78	2	1	1	NUM
iogr-1286	78	3	provides	provide	VERB
iogr-1286	78	4	a	a	DET
iogr-1286	78	5	location	location	NOUN
iogr-1286	78	6	map	map	NOUN
iogr-1286	78	7	showing	show	VERB
iogr-1286	78	8	these	these	DET
iogr-1286	78	9	basins	basin	NOUN
iogr-1286	78	10	,	,	PUNCT
iogr-1286	78	11	extending	extend	VERB
iogr-1286	78	12	from	from	ADP
iogr-1286	78	13	the	the	DET
iogr-1286	78	14	bida	bida	PROPN
iogr-1286	78	15	basin	basin	PROPN
iogr-1286	78	16	to	to	ADP
iogr-1286	78	17	the	the	DET
iogr-1286	78	18	lower	low	ADJ
iogr-1286	78	19	and	and	CCONJ
iogr-1286	78	20	upper	upper	ADJ
iogr-1286	78	21	benue	benue	NOUN
iogr-1286	78	22	trough	trough	NOUN
iogr-1286	78	23	basin	basin	NOUN
iogr-1286	78	24	.	.	PUNCT
iogr-1286	79	1	the	the	DET
iogr-1286	79	2	okaba	okaba	ADJ
iogr-1286	79	3	basin	basin	NOUN
iogr-1286	79	4	is	be	AUX
iogr-1286	79	5	situated	situate	VERB
iogr-1286	79	6	in	in	ADP
iogr-1286	79	7	kogi	kogi	PROPN
iogr-1286	79	8	,	,	PUNCT
iogr-1286	79	9	near	near	ADP
iogr-1286	79	10	lokoja	lokoja	PROPN
iogr-1286	79	11	,	,	PUNCT
iogr-1286	79	12	as	as	SCONJ
iogr-1286	79	13	marked	mark	VERB
iogr-1286	79	14	on	on	ADP
iogr-1286	79	15	the	the	DET
iogr-1286	79	16	figure	figure	NOUN
iogr-1286	79	17	1	1	NUM
iogr-1286	79	18	.	.	PUNCT
iogr-1286	79	19	figure	figure	NOUN
iogr-1286	79	20	1	1	NUM
iogr-1286	79	21	—	—	PUNCT
iogr-1286	79	22	coalbed	coalbe	VERB
iogr-1286	79	23	methane	methane	NOUN
iogr-1286	79	24	producing	produce	VERB
iogr-1286	79	25	fields	field	NOUN
iogr-1286	79	26	in	in	ADP
iogr-1286	79	27	nigeria	nigeria	PROPN
iogr-1286	79	28	(	(	PUNCT
iogr-1286	79	29	modified	modify	VERB
iogr-1286	79	30	from	from	ADP
iogr-1286	79	31	akinyemi	akinyemi	ADP
iogr-1286	79	32	et	et	PROPN
iogr-1286	79	33	al	al	PROPN
iogr-1286	79	34	.	.	PROPN
iogr-1286	79	35	2022	2022	NUM
iogr-1286	79	36	)	)	PUNCT
iogr-1286	79	37	.	.	PUNCT
iogr-1286	80	1	data	datum	NOUN
iogr-1286	80	2	collection	collection	PROPN
iogr-1286	80	3	.	.	PUNCT
iogr-1286	81	1	quantitative	quantitative	ADJ
iogr-1286	81	2	data	datum	NOUN
iogr-1286	81	3	on	on	ADP
iogr-1286	81	4	coal	coal	NOUN
iogr-1286	81	5	attributes	attribute	NOUN
iogr-1286	81	6	and	and	CCONJ
iogr-1286	81	7	quality	quality	NOUN
iogr-1286	81	8	have	have	AUX
iogr-1286	81	9	been	be	AUX
iogr-1286	81	10	sourced	source	VERB
iogr-1286	81	11	from	from	ADP
iogr-1286	81	12	the	the	DET
iogr-1286	81	13	nigerian	nigerian	ADJ
iogr-1286	81	14	coal	coal	NOUN
iogr-1286	81	15	corporation	corporation	NOUN
iogr-1286	81	16	(	(	PUNCT
iogr-1286	81	17	ncc	ncc	PROPN
iogr-1286	81	18	)	)	PUNCT
iogr-1286	81	19	,	,	PUNCT
iogr-1286	81	20	which	which	PRON
iogr-1286	81	21	is	be	AUX
iogr-1286	81	22	responsible	responsible	ADJ
iogr-1286	81	23	for	for	ADP
iogr-1286	81	24	coal	coal	NOUN
iogr-1286	81	25	exploration	exploration	NOUN
iogr-1286	81	26	and	and	CCONJ
iogr-1286	81	27	quality	quality	NOUN
iogr-1286	81	28	testing	testing	NOUN
iogr-1286	81	29	throughout	throughout	ADP
iogr-1286	81	30	the	the	DET
iogr-1286	81	31	country	country	NOUN
iogr-1286	81	32	.	.	PUNCT
iogr-1286	82	1	according	accord	VERB
iogr-1286	82	2	to	to	ADP
iogr-1286	82	3	ncc	ncc	PROPN
iogr-1286	82	4	data	datum	NOUN
iogr-1286	82	5	,	,	PUNCT
iogr-1286	82	6	there	there	PRON
iogr-1286	82	7	are	be	VERB
iogr-1286	82	8	currently	currently	ADV
iogr-1286	82	9	four	four	NUM
iogr-1286	82	10	active	active	ADJ
iogr-1286	82	11	coal	coal	NOUN
iogr-1286	82	12	mines	mine	NOUN
iogr-1286	82	13	in	in	ADP
iogr-1286	82	14	nigeria	nigeria	PROPN
iogr-1286	82	15	,	,	PUNCT
iogr-1286	82	16	as	as	SCONJ
iogr-1286	82	17	detailed	detailed	ADJ
iogr-1286	82	18	in	in	ADP
iogr-1286	82	19	table	table	NOUN
iogr-1286	82	20	2	2	NUM
iogr-1286	82	21	.	.	PUNCT
iogr-1286	83	1	for	for	ADP
iogr-1286	83	2	this	this	DET
iogr-1286	83	3	study	study	NOUN
iogr-1286	83	4	,	,	PUNCT
iogr-1286	83	5	the	the	DET
iogr-1286	83	6	collected	collect	VERB
iogr-1286	83	7	coal	coal	NOUN
iogr-1286	83	8	data	datum	NOUN
iogr-1286	83	9	encompasses	encompass	VERB
iogr-1286	83	10	coal	coal	NOUN
iogr-1286	83	11	rank	rank	NOUN
iogr-1286	83	12	,	,	PUNCT
iogr-1286	83	13	seam	seam	NOUN
iogr-1286	83	14	depth	depth	NOUN
iogr-1286	83	15	,	,	PUNCT
iogr-1286	83	16	recoverable	recoverable	ADJ
iogr-1286	83	17	reserves	reserve	NOUN
iogr-1286	83	18	,	,	PUNCT
iogr-1286	83	19	moisture	moisture	NOUN
iogr-1286	83	20	content	content	NOUN
iogr-1286	83	21	,	,	PUNCT
iogr-1286	83	22	volatile	volatile	ADJ
iogr-1286	83	23	matter	matter	NOUN
iogr-1286	83	24	,	,	PUNCT
iogr-1286	83	25	ash	ash	NOUN
iogr-1286	83	26	content	content	NOUN
iogr-1286	83	27	,	,	PUNCT
iogr-1286	83	28	and	and	CCONJ
iogr-1286	83	29	gas	gas	NOUN
iogr-1286	83	30	content	content	NOUN
iogr-1286	83	31	.	.	PUNCT
iogr-1286	84	1	table	table	NOUN
iogr-1286	84	2	2	2	NUM
iogr-1286	84	3	—	—	PUNCT
iogr-1286	84	4	list	list	NOUN
iogr-1286	84	5	of	of	ADP
iogr-1286	84	6	four	four	NUM
iogr-1286	84	7	cbm	cbm	PROPN
iogr-1286	84	8	basins	basin	NOUN
iogr-1286	84	9	in	in	ADP
iogr-1286	84	10	nigeria	nigeria	PROPN
iogr-1286	84	11	.	.	PUNCT
iogr-1286	85	1	no	no	INTJ
iogr-1286	85	2	.	.	PUNCT
iogr-1286	86	1	basins	basin	NOUN
iogr-1286	86	2	location(state	location(state	PROPN
iogr-1286	86	3	)	)	PUNCT
iogr-1286	86	4	status	status	NOUN
iogr-1286	86	5	1	1	NUM
iogr-1286	86	6	okpara	okpara	NOUN
iogr-1286	86	7	enugu	enugu	NOUN
iogr-1286	86	8	mining	mining	NOUN
iogr-1286	86	9	by	by	ADP
iogr-1286	86	10	excavating	excavate	VERB
iogr-1286	86	11	2	2	NUM
iogr-1286	86	12	onyeama	onyeama	NOUN
iogr-1286	86	13	enugu	enugu	PROPN
iogr-1286	86	14	mining	mining	NOUN
iogr-1286	86	15	3	3	NUM
iogr-1286	86	16	okaba	okaba	ADJ
iogr-1286	86	17	kogi	kogi	PROPN
iogr-1286	86	18	operating	operate	VERB
iogr-1286	86	19	coal	coal	NOUN
iogr-1286	86	20	mine	mine	NOUN
iogr-1286	86	21	4	4	NUM
iogr-1286	86	22	owukpa	owukpa	NOUN
iogr-1286	86	23	benue	benue	VERB
iogr-1286	86	24	mining	mine	VERB
iogr-1286	86	25	improved	improve	VERB
iogr-1286	86	26	oil	oil	NOUN
iogr-1286	86	27	and	and	CCONJ
iogr-1286	86	28	gas	gas	NOUN
iogr-1286	86	29	recovery	recovery	NOUN
iogr-1286	86	30	5	5	NUM
iogr-1286	86	31	data	datum	NOUN
iogr-1286	86	32	analysis	analysis	NOUN
iogr-1286	86	33	.	.	PUNCT
iogr-1286	87	1	the	the	DET
iogr-1286	87	2	proximate	proximate	NOUN
iogr-1286	87	3	analysis	analysis	NOUN
iogr-1286	87	4	method	method	NOUN
iogr-1286	87	5	was	be	AUX
iogr-1286	87	6	employed	employ	VERB
iogr-1286	87	7	to	to	PART
iogr-1286	87	8	assess	assess	VERB
iogr-1286	87	9	the	the	DET
iogr-1286	87	10	ash	ash	NOUN
iogr-1286	87	11	content	content	NOUN
iogr-1286	87	12	,	,	PUNCT
iogr-1286	87	13	moisture	moisture	NOUN
iogr-1286	87	14	content	content	NOUN
iogr-1286	87	15	,	,	PUNCT
iogr-1286	87	16	calorific	calorific	ADJ
iogr-1286	87	17	value	value	NOUN
iogr-1286	87	18	,	,	PUNCT
iogr-1286	87	19	and	and	CCONJ
iogr-1286	87	20	volatile	volatile	ADJ
iogr-1286	87	21	matter	matter	NOUN
iogr-1286	87	22	of	of	ADP
iogr-1286	87	23	the	the	DET
iogr-1286	87	24	coal	coal	NOUN
iogr-1286	87	25	samples	sample	NOUN
iogr-1286	87	26	.	.	PUNCT
iogr-1286	88	1	for	for	ADP
iogr-1286	88	2	this	this	DET
iogr-1286	88	3	analysis	analysis	NOUN
iogr-1286	88	4	,	,	PUNCT
iogr-1286	88	5	1	1	NUM
iogr-1286	88	6	gram	gram	NOUN
iogr-1286	88	7	of	of	ADP
iogr-1286	88	8	each	each	DET
iogr-1286	88	9	coal	coal	NOUN
iogr-1286	88	10	sample	sample	NOUN
iogr-1286	88	11	,	,	PUNCT
iogr-1286	88	12	passed	pass	VERB
iogr-1286	88	13	through	through	ADP
iogr-1286	88	14	a	a	DET
iogr-1286	88	15	212	212	NUM
iogr-1286	88	16	µm	µm	ADP
iogr-1286	88	17	sieve	sieve	NOUN
iogr-1286	88	18	,	,	PUNCT
iogr-1286	88	19	was	be	AUX
iogr-1286	88	20	used	use	VERB
iogr-1286	88	21	.	.	PUNCT
iogr-1286	89	1	moisture	moisture	NOUN
iogr-1286	89	2	content	content	NOUN
iogr-1286	89	3	was	be	AUX
iogr-1286	89	4	determined	determine	VERB
iogr-1286	89	5	using	use	VERB
iogr-1286	89	6	a	a	DET
iogr-1286	89	7	labcon	labcon	NOUN
iogr-1286	89	8	air	air	NOUN
iogr-1286	89	9	oven	oven	NOUN
iogr-1286	89	10	in	in	ADP
iogr-1286	89	11	accordance	accordance	NOUN
iogr-1286	89	12	with	with	ADP
iogr-1286	89	13	the	the	DET
iogr-1286	89	14	south	south	ADJ
iogr-1286	89	15	african	african	ADJ
iogr-1286	89	16	national	national	ADJ
iogr-1286	89	17	standards	standard	NOUN
iogr-1286	89	18	(	(	PUNCT
iogr-1286	89	19	sans	san	NOUN
iogr-1286	89	20	)	)	PUNCT
iogr-1286	89	21	5925:2007	5925:2007	NUM
iogr-1286	89	22	.	.	PUNCT
iogr-1286	90	1	volatile	volatile	ADJ
iogr-1286	90	2	matter	matter	NOUN
iogr-1286	90	3	was	be	AUX
iogr-1286	90	4	analyzed	analyze	VERB
iogr-1286	90	5	using	use	VERB
iogr-1286	90	6	a	a	DET
iogr-1286	90	7	volatile	volatile	ADJ
iogr-1286	90	8	furnace	furnace	NOUN
iogr-1286	90	9	based	base	VERB
iogr-1286	90	10	on	on	ADP
iogr-1286	90	11	iso	iso	PROPN
iogr-1286	90	12	562:1998	562:1998	NUM
iogr-1286	90	13	.	.	PUNCT
iogr-1286	91	1	ash	ash	NOUN
iogr-1286	91	2	content	content	NOUN
iogr-1286	91	3	was	be	AUX
iogr-1286	91	4	evaluated	evaluate	VERB
iogr-1286	91	5	with	with	ADP
iogr-1286	91	6	a	a	DET
iogr-1286	91	7	lenton	lenton	PROPN
iogr-1286	91	8	programmable	programmable	ADJ
iogr-1286	91	9	furnace	furnace	NOUN
iogr-1286	91	10	,	,	PUNCT
iogr-1286	91	11	following	follow	VERB
iogr-1286	91	12	iso	iso	NOUN
iogr-1286	91	13	1171:1997	1171:1997	NUM
iogr-1286	91	14	guidelines	guideline	NOUN
iogr-1286	91	15	(	(	PUNCT
iogr-1286	91	16	taylor	taylor	PROPN
iogr-1286	91	17	et	et	PROPN
iogr-1286	91	18	al	al	PROPN
iogr-1286	91	19	.	.	PROPN
iogr-1286	91	20	1998	1998	NUM
iogr-1286	91	21	)	)	PUNCT
iogr-1286	91	22	.	.	PUNCT
iogr-1286	92	1	fixed	fix	VERB
iogr-1286	92	2	carbon	carbon	NOUN
iogr-1286	92	3	content	content	NOUN
iogr-1286	92	4	in	in	ADP
iogr-1286	92	5	the	the	DET
iogr-1286	92	6	coal	coal	NOUN
iogr-1286	92	7	was	be	AUX
iogr-1286	92	8	calculated	calculate	VERB
iogr-1286	92	9	using	use	VERB
iogr-1286	92	10	the	the	DET
iogr-1286	92	11	appropriate	appropriate	ADJ
iogr-1286	92	12	formula	formula	NOUN
iogr-1286	92	13	as	as	ADP
iogr-1286	92	14	eq	eq	NOUN
iogr-1286	92	15	.	.	PROPN
iogr-1286	92	16	1	1	NUM
iogr-1286	92	17	,	,	PUNCT
iogr-1286	92	18	fixed	fix	VERB
iogr-1286	92	19	carbon	carbon	NOUN
iogr-1286	92	20	(	(	PUNCT
iogr-1286	92	21	%	%	INTJ
iogr-1286	92	22	)	)	PUNCT
iogr-1286	93	1	=	=	NOUN
iogr-1286	93	2	100	100	NUM
iogr-1286	93	3	–	–	PUNCT
iogr-1286	93	4	moisture	moisture	NOUN
iogr-1286	93	5	(	(	PUNCT
iogr-1286	93	6	%	%	INTJ
iogr-1286	93	7	)	)	PUNCT
iogr-1286	93	8	–	–	PUNCT
iogr-1286	93	9	ash	ash	NOUN
iogr-1286	93	10	(	(	PUNCT
iogr-1286	93	11	%	%	INTJ
iogr-1286	93	12	)	)	PUNCT
iogr-1286	93	13	volatile	volatile	ADJ
iogr-1286	93	14	matter	matter	NOUN
iogr-1286	93	15	(	(	PUNCT
iogr-1286	93	16	%	%	INTJ
iogr-1286	93	17	)	)	PUNCT
iogr-1286	93	18	........................................................	........................................................	PUNCT
iogr-1286	93	19	(	(	PUNCT
iogr-1286	93	20	1	1	X
iogr-1286	93	21	)	)	PUNCT
iogr-1286	93	22	porosity	porosity	NOUN
iogr-1286	93	23	is	be	AUX
iogr-1286	93	24	determined	determine	VERB
iogr-1286	93	25	through	through	ADP
iogr-1286	93	26	core	core	ADJ
iogr-1286	93	27	analysis	analysis	NOUN
iogr-1286	93	28	.	.	PUNCT
iogr-1286	94	1	initially	initially	ADV
iogr-1286	94	2	,	,	PUNCT
iogr-1286	94	3	the	the	DET
iogr-1286	94	4	bulk	bulk	ADJ
iogr-1286	94	5	and	and	CCONJ
iogr-1286	94	6	grain	grain	NOUN
iogr-1286	94	7	densities	density	NOUN
iogr-1286	94	8	are	be	AUX
iogr-1286	94	9	measured	measure	VERB
iogr-1286	94	10	,	,	PUNCT
iogr-1286	94	11	and	and	CCONJ
iogr-1286	94	12	porosity	porosity	NOUN
iogr-1286	94	13	is	be	AUX
iogr-1286	94	14	then	then	ADV
iogr-1286	94	15	calculated	calculate	VERB
iogr-1286	94	16	by	by	ADP
iogr-1286	94	17	dividing	divide	VERB
iogr-1286	94	18	the	the	DET
iogr-1286	94	19	pore	pore	ADJ
iogr-1286	94	20	volume	volume	NOUN
iogr-1286	94	21	by	by	ADP
iogr-1286	94	22	the	the	DET
iogr-1286	94	23	bulk	bulk	ADJ
iogr-1286	94	24	volume	volume	NOUN
iogr-1286	94	25	.	.	PUNCT
iogr-1286	95	1	with	with	ADP
iogr-1286	95	2	all	all	DET
iogr-1286	95	3	necessary	necessary	ADJ
iogr-1286	95	4	data	datum	NOUN
iogr-1286	95	5	collected	collect	VERB
iogr-1286	95	6	and	and	CCONJ
iogr-1286	95	7	assumptions	assumption	NOUN
iogr-1286	95	8	established	establish	VERB
iogr-1286	95	9	,	,	PUNCT
iogr-1286	95	10	a	a	DET
iogr-1286	95	11	comparative	comparative	ADJ
iogr-1286	95	12	data	data	NOUN
iogr-1286	95	13	analysis	analysis	NOUN
iogr-1286	95	14	technique	technique	NOUN
iogr-1286	95	15	was	be	AUX
iogr-1286	95	16	used	use	VERB
iogr-1286	95	17	in	in	ADP
iogr-1286	95	18	this	this	DET
iogr-1286	95	19	study	study	NOUN
iogr-1286	95	20	.	.	PUNCT
iogr-1286	96	1	this	this	DET
iogr-1286	96	2	approach	approach	NOUN
iogr-1286	96	3	involved	involve	VERB
iogr-1286	96	4	examining	examine	VERB
iogr-1286	96	5	cbm	cbm	PROPN
iogr-1286	96	6	data	datum	NOUN
iogr-1286	96	7	from	from	ADP
iogr-1286	96	8	nigeria	nigeria	PROPN
iogr-1286	96	9	and	and	CCONJ
iogr-1286	96	10	comparing	compare	VERB
iogr-1286	96	11	it	it	PRON
iogr-1286	96	12	with	with	ADP
iogr-1286	96	13	data	datum	NOUN
iogr-1286	96	14	from	from	ADP
iogr-1286	96	15	cbm	cbm	ADJ
iogr-1286	96	16	-	-	PUNCT
iogr-1286	96	17	producing	produce	VERB
iogr-1286	96	18	countries	country	NOUN
iogr-1286	96	19	such	such	ADJ
iogr-1286	96	20	as	as	ADP
iogr-1286	96	21	the	the	DET
iogr-1286	96	22	u.s	u.s	PROPN
iogr-1286	96	23	.	.	PROPN
iogr-1286	96	24	,	,	PUNCT
iogr-1286	96	25	china	china	PROPN
iogr-1286	96	26	,	,	PUNCT
iogr-1286	96	27	indonesia	indonesia	PROPN
iogr-1286	96	28	,	,	PUNCT
iogr-1286	96	29	india	india	PROPN
iogr-1286	96	30	,	,	PUNCT
iogr-1286	96	31	australia	australia	PROPN
iogr-1286	96	32	,	,	PUNCT
iogr-1286	96	33	and	and	CCONJ
iogr-1286	96	34	canada	canada	PROPN
iogr-1286	96	35	.	.	PUNCT
iogr-1286	97	1	the	the	DET
iogr-1286	97	2	gas	gas	NOUN
iogr-1286	97	3	-	-	PUNCT
iogr-1286	97	4	proven	prove	VERB
iogr-1286	97	5	results	result	NOUN
iogr-1286	97	6	were	be	AUX
iogr-1286	97	7	calculated	calculate	VERB
iogr-1286	97	8	by	by	ADP
iogr-1286	97	9	multiplying	multiply	VERB
iogr-1286	97	10	the	the	DET
iogr-1286	97	11	gas	gas	NOUN
iogr-1286	97	12	reserves	reserve	NOUN
iogr-1286	97	13	(	(	PUNCT
iogr-1286	97	14	in	in	ADP
iogr-1286	97	15	million	million	NUM
iogr-1286	97	16	tons	ton	NOUN
iogr-1286	97	17	)	)	PUNCT
iogr-1286	97	18	by	by	ADP
iogr-1286	97	19	the	the	DET
iogr-1286	97	20	gas	gas	NOUN
iogr-1286	97	21	content	content	NOUN
iogr-1286	97	22	(	(	PUNCT
iogr-1286	97	23	cubic	cubic	ADJ
iogr-1286	97	24	feet	foot	NOUN
iogr-1286	97	25	per	per	ADP
iogr-1286	97	26	ton	ton	NOUN
iogr-1286	97	27	)	)	PUNCT
iogr-1286	97	28	.	.	PUNCT
iogr-1286	98	1	gas	gas	NOUN
iogr-1286	98	2	content	content	NOUN
iogr-1286	98	3	(	(	PUNCT
iogr-1286	98	4	cubic	cubic	PROPN
iogr-1286	98	5	feet)=proven	feet)=proven	NUM
iogr-1286	98	6	reserve	reserve	NOUN
iogr-1286	98	7	(	(	PUNCT
iogr-1286	98	8	tons	ton	NOUN
iogr-1286	98	9	)	)	PUNCT
iogr-1286	98	10	*	*	PUNCT
iogr-1286	98	11	gas	gas	NOUN
iogr-1286	98	12	content	content	NOUN
iogr-1286	98	13	(	(	PUNCT
iogr-1286	98	14	cubic	cubic	ADJ
iogr-1286	98	15	feet	foot	NOUN
iogr-1286	98	16	/	/	SYM
iogr-1286	98	17	ton)	ton)	PROPN
iogr-1286	98	18	..............................................	..............................................	PUNCT
iogr-1286	98	19	(2	(2	PROPN
iogr-1286	98	20	)	)	PUNCT
iogr-1286	98	21	results	result	NOUN
iogr-1286	98	22	and	and	CCONJ
iogr-1286	98	23	discussions	discussion	NOUN
iogr-1286	98	24	the	the	DET
iogr-1286	98	25	coal	coal	NOUN
iogr-1286	98	26	deposits	deposit	NOUN
iogr-1286	98	27	in	in	ADP
iogr-1286	98	28	nigeria	nigeria	PROPN
iogr-1286	98	29	are	be	AUX
iogr-1286	98	30	characterized	characterize	VERB
iogr-1286	98	31	by	by	ADP
iogr-1286	98	32	shallow	shallow	ADJ
iogr-1286	98	33	depths	depth	NOUN
iogr-1286	98	34	,	,	PUNCT
iogr-1286	98	35	sub	sub	ADJ
iogr-1286	98	36	-	-	ADJ
iogr-1286	98	37	bituminous	bituminous	ADJ
iogr-1286	98	38	rank	rank	NOUN
iogr-1286	98	39	,	,	PUNCT
iogr-1286	98	40	low	low	ADJ
iogr-1286	98	41	ash	ash	NOUN
iogr-1286	98	42	content	content	NOUN
iogr-1286	98	43	,	,	PUNCT
iogr-1286	98	44	and	and	CCONJ
iogr-1286	98	45	high	high	ADJ
iogr-1286	98	46	volatile	volatile	ADJ
iogr-1286	98	47	matter	matter	NOUN
iogr-1286	98	48	.	.	PUNCT
iogr-1286	99	1	as	as	SCONJ
iogr-1286	99	2	summarized	summarize	VERB
iogr-1286	99	3	in	in	ADP
iogr-1286	99	4	table	table	NOUN
iogr-1286	99	5	3	3	NUM
iogr-1286	99	6	,	,	PUNCT
iogr-1286	99	7	coal	coal	NOUN
iogr-1286	99	8	from	from	ADP
iogr-1286	99	9	the	the	DET
iogr-1286	99	10	four	four	NUM
iogr-1286	99	11	basins	basin	NOUN
iogr-1286	99	12	analyzed	analyze	VERB
iogr-1286	99	13	is	be	AUX
iogr-1286	99	14	classified	classify	VERB
iogr-1286	99	15	as	as	ADP
iogr-1286	99	16	subbituminous	subbituminous	ADJ
iogr-1286	99	17	coal	coal	NOUN
iogr-1286	99	18	,	,	PUNCT
iogr-1286	99	19	which	which	PRON
iogr-1286	99	20	is	be	AUX
iogr-1286	99	21	a	a	DET
iogr-1286	99	22	low	low	ADJ
iogr-1286	99	23	-	-	PUNCT
iogr-1286	99	24	rank	rank	NOUN
iogr-1286	99	25	coal	coal	NOUN
iogr-1286	99	26	type	type	NOUN
iogr-1286	99	27	,	,	PUNCT
iogr-1286	99	28	according	accord	VERB
iogr-1286	99	29	to	to	ADP
iogr-1286	99	30	the	the	DET
iogr-1286	99	31	united	united	PROPN
iogr-1286	99	32	states	states	PROPN
iogr-1286	99	33	geological	geological	ADJ
iogr-1286	99	34	survey	survey	NOUN
iogr-1286	99	35	(	(	PUNCT
iogr-1286	99	36	u.s	u.s	PROPN
iogr-1286	99	37	.	.	PROPN
iogr-1286	99	38	geological	geological	ADJ
iogr-1286	99	39	survey	survey	NOUN
iogr-1286	99	40	2017	2017	NUM
iogr-1286	99	41	)	)	PUNCT
iogr-1286	99	42	.	.	PUNCT
iogr-1286	100	1	sub	sub	ADJ
iogr-1286	100	2	-	-	ADJ
iogr-1286	100	3	bituminous	bituminous	ADJ
iogr-1286	100	4	coal	coal	NOUN
iogr-1286	100	5	,	,	PUNCT
iogr-1286	100	6	often	often	ADV
iogr-1286	100	7	gray	gray	ADJ
iogr-1286	100	8	-	-	PUNCT
iogr-1286	100	9	black	black	ADJ
iogr-1286	100	10	or	or	CCONJ
iogr-1286	100	11	dark	dark	ADJ
iogr-1286	100	12	brown	brown	NOUN
iogr-1286	100	13	,	,	PUNCT
iogr-1286	100	14	represents	represent	VERB
iogr-1286	100	15	an	an	DET
iogr-1286	100	16	intermediate	intermediate	ADJ
iogr-1286	100	17	stage	stage	NOUN
iogr-1286	100	18	between	between	ADP
iogr-1286	100	19	lignite	lignite	ADJ
iogr-1286	100	20	and	and	CCONJ
iogr-1286	100	21	higher	high	ADJ
iogr-1286	100	22	-	-	PUNCT
iogr-1286	100	23	quality	quality	NOUN
iogr-1286	100	24	bituminous	bituminous	ADJ
iogr-1286	100	25	coal	coal	NOUN
iogr-1286	100	26	.	.	PUNCT
iogr-1286	101	1	it	it	PRON
iogr-1286	101	2	is	be	AUX
iogr-1286	101	3	widely	widely	ADV
iogr-1286	101	4	used	use	VERB
iogr-1286	101	5	in	in	ADP
iogr-1286	101	6	power	power	NOUN
iogr-1286	101	7	plants	plant	NOUN
iogr-1286	101	8	for	for	ADP
iogr-1286	101	9	steam	steam	NOUN
iogr-1286	101	10	generation	generation	NOUN
iogr-1286	101	11	and	and	CCONJ
iogr-1286	101	12	can	can	AUX
iogr-1286	101	13	also	also	ADV
iogr-1286	101	14	be	be	AUX
iogr-1286	101	15	liquefied	liquefy	VERB
iogr-1286	101	16	to	to	PART
iogr-1286	101	17	produce	produce	VERB
iogr-1286	101	18	petroleum	petroleum	NOUN
iogr-1286	101	19	and	and	CCONJ
iogr-1286	101	20	natural	natural	ADJ
iogr-1286	101	21	gas	gas	NOUN
iogr-1286	101	22	(	(	PUNCT
iogr-1286	101	23	energy	energy	NOUN
iogr-1286	101	24	education	education	NOUN
iogr-1286	101	25	2008	2008	NUM
iogr-1286	101	26	)	)	PUNCT
iogr-1286	101	27	.	.	PUNCT
iogr-1286	102	1	table	table	NOUN
iogr-1286	102	2	3	3	NUM
iogr-1286	102	3	—	—	PUNCT
iogr-1286	102	4	coal	coal	NOUN
iogr-1286	102	5	quality	quality	NOUN
iogr-1286	102	6	of	of	ADP
iogr-1286	102	7	four	four	NUM
iogr-1286	102	8	nigeria`s	nigeria`	NOUN
iogr-1286	102	9	basins	basin	NOUN
iogr-1286	102	10	.	.	PUNCT
iogr-1286	103	1	quality	quality	NOUN
iogr-1286	103	2	parameter	parameter	NOUN
iogr-1286	103	3	locations	location	NOUN
iogr-1286	103	4	okapara	okapara	ADJ
iogr-1286	103	5	onyeama	onyeama	NOUN
iogr-1286	103	6	okaba	okaba	ADJ
iogr-1286	103	7	owukpa	owukpa	PROPN
iogr-1286	103	8	average	average	ADJ
iogr-1286	103	9	proven	prove	VERB
iogr-1286	103	10	reserve(mt	reserve(mt	NOUN
iogr-1286	103	11	)	)	PUNCT
iogr-1286	103	12	24	24	NUM
iogr-1286	103	13	40	40	NUM
iogr-1286	103	14	73	73	NUM
iogr-1286	103	15	57	57	NUM
iogr-1286	103	16	coal	coal	NOUN
iogr-1286	103	17	rank	rank	NOUN
iogr-1286	103	18	sub	sub	ADJ
iogr-1286	103	19	-	-	ADJ
iogr-1286	103	20	bituminous	bituminous	ADJ
iogr-1286	103	21	sub	sub	ADJ
iogr-1286	103	22	-	-	ADJ
iogr-1286	103	23	bituminous	bituminous	ADJ
iogr-1286	103	24	sub	sub	ADJ
iogr-1286	103	25	-	-	ADJ
iogr-1286	103	26	bituminous	bituminous	ADJ
iogr-1286	103	27	sub	sub	ADJ
iogr-1286	103	28	-	-	ADJ
iogr-1286	103	29	bituminous	bituminous	ADJ
iogr-1286	103	30	sub	sub	ADJ
iogr-1286	103	31	-	-	ADJ
iogr-1286	103	32	bituminous	bituminous	ADJ
iogr-1286	103	33	depth	depth	NOUN
iogr-1286	103	34	(	(	PUNCT
iogr-1286	103	35	m	m	NOUN
iogr-1286	103	36	)	)	PUNCT
iogr-1286	103	37	180	180	NUM
iogr-1286	103	38	100.2	100.2	NUM
iogr-1286	103	39	100	100	NUM
iogr-1286	103	40	100	100	NUM
iogr-1286	103	41	120.05	120.05	NUM
iogr-1286	103	42	moisture	moisture	NOUN
iogr-1286	103	43	(	(	PUNCT
iogr-1286	103	44	%	%	NOUN
iogr-1286	103	45	)	)	PUNCT
iogr-1286	103	46	7.5	7.5	NUM
iogr-1286	103	47	12.61	12.61	NUM
iogr-1286	103	48	15.4	15.4	NUM
iogr-1286	103	49	8.3	8.3	NUM
iogr-1286	103	50	10.95	10.95	NUM
iogr-1286	103	51	ash	ash	NOUN
iogr-1286	103	52	(	(	PUNCT
iogr-1286	103	53	%	%	NOUN
iogr-1286	103	54	)	)	PUNCT
iogr-1286	103	55	8.4	8.4	NUM
iogr-1286	103	56	3.67	3.67	NUM
iogr-1286	103	57	7.3	7.3	NUM
iogr-1286	103	58	8.6	8.6	NUM
iogr-1286	103	59	6.99	6.99	NUM
iogr-1286	103	60	volatile	volatile	ADJ
iogr-1286	103	61	matter	matter	NOUN
iogr-1286	103	62	38.26	38.26	NUM
iogr-1286	103	63	36.64	36.64	NUM
iogr-1286	103	64	36.4	36.4	NUM
iogr-1286	103	65	38.6	38.6	NUM
iogr-1286	103	66	37.48	37.48	NUM
iogr-1286	103	67	gas	gas	NOUN
iogr-1286	103	68	content	content	NOUN
iogr-1286	103	69	(	(	PUNCT
iogr-1286	103	70	scf	scf	PROPN
iogr-1286	103	71	/	/	SYM
iogr-1286	103	72	ton	ton	NOUN
iogr-1286	103	73	)	)	PUNCT
iogr-1286	104	1	312.14	312.14	NUM
iogr-1286	104	2	312.14	312.14	NUM
iogr-1286	104	3	312.14	312.14	NUM
iogr-1286	104	4	312.14	312.14	NUM
iogr-1286	104	5	312.14	312.14	NUM
iogr-1286	104	6	the	the	DET
iogr-1286	104	7	coal	coal	NOUN
iogr-1286	104	8	seams	seam	NOUN
iogr-1286	104	9	in	in	ADP
iogr-1286	104	10	nigeria	nigeria	PROPN
iogr-1286	104	11	generally	generally	ADV
iogr-1286	104	12	lie	lie	VERB
iogr-1286	104	13	at	at	ADP
iogr-1286	104	14	shallow	shallow	ADJ
iogr-1286	104	15	depths	depth	NOUN
iogr-1286	104	16	,	,	PUNCT
iogr-1286	104	17	around	around	ADV
iogr-1286	104	18	100	100	NUM
iogr-1286	104	19	meters	meter	NOUN
iogr-1286	104	20	,	,	PUNCT
iogr-1286	104	21	except	except	SCONJ
iogr-1286	104	22	for	for	ADP
iogr-1286	104	23	the	the	DET
iogr-1286	104	24	okapara	okapara	ADJ
iogr-1286	104	25	basin	basin	NOUN
iogr-1286	104	26	in	in	ADP
iogr-1286	104	27	enugu	enugu	PROPN
iogr-1286	104	28	,	,	PUNCT
iogr-1286	104	29	where	where	SCONJ
iogr-1286	104	30	the	the	DET
iogr-1286	104	31	formation	formation	NOUN
iogr-1286	104	32	reaches	reach	VERB
iogr-1286	104	33	a	a	DET
iogr-1286	104	34	depth	depth	NOUN
iogr-1286	104	35	of	of	ADP
iogr-1286	104	36	180	180	NUM
iogr-1286	104	37	meters	meter	NOUN
iogr-1286	104	38	.	.	PUNCT
iogr-1286	105	1	the	the	DET
iogr-1286	105	2	average	average	ADJ
iogr-1286	105	3	moisture	moisture	NOUN
iogr-1286	105	4	content	content	NOUN
iogr-1286	105	5	is	be	AUX
iogr-1286	105	6	10.95	10.95	NUM
iogr-1286	105	7	%	%	NOUN
iogr-1286	105	8	,	,	PUNCT
iogr-1286	105	9	while	while	SCONJ
iogr-1286	105	10	ash	ash	NOUN
iogr-1286	105	11	content	content	NOUN
iogr-1286	105	12	varies	vary	VERB
iogr-1286	105	13	from	from	ADP
iogr-1286	105	14	3.67	3.67	NUM
iogr-1286	105	15	%	%	NOUN
iogr-1286	105	16	to	to	PART
iogr-1286	105	17	8.6	8.6	NUM
iogr-1286	105	18	%	%	NOUN
iogr-1286	105	19	in	in	ADP
iogr-1286	105	20	the	the	DET
iogr-1286	105	21	owukpa	owukpa	PROPN
iogr-1286	105	22	basin	basin	PROPN
iogr-1286	105	23	,	,	PUNCT
iogr-1286	105	24	with	with	ADP
iogr-1286	105	25	an	an	DET
iogr-1286	105	26	overall	overall	ADJ
iogr-1286	105	27	average	average	NOUN
iogr-1286	105	28	of	of	ADP
iogr-1286	105	29	6.99	6.99	NUM
iogr-1286	105	30	%	%	NOUN
iogr-1286	105	31	.	.	PUNCT
iogr-1286	106	1	the	the	DET
iogr-1286	106	2	gas	gas	NOUN
iogr-1286	106	3	content	content	NOUN
iogr-1286	106	4	of	of	ADP
iogr-1286	106	5	these	these	DET
iogr-1286	106	6	cbm	cbm	PROPN
iogr-1286	106	7	basins	basin	NOUN
iogr-1286	106	8	suggests	suggest	VERB
iogr-1286	106	9	significant	significant	ADJ
iogr-1286	106	10	potential	potential	NOUN
iogr-1286	106	11	for	for	ADP
iogr-1286	106	12	coal	coal	NOUN
iogr-1286	106	13	-	-	PUNCT
iogr-1286	106	14	bed	bed	NOUN
iogr-1286	106	15	methane	methane	NOUN
iogr-1286	106	16	production	production	NOUN
iogr-1286	106	17	.	.	PUNCT
iogr-1286	107	1	mature	mature	ADJ
iogr-1286	107	2	coals	coal	NOUN
iogr-1286	107	3	,	,	PUNCT
iogr-1286	107	4	which	which	PRON
iogr-1286	107	5	are	be	AUX
iogr-1286	107	6	deeper	deep	ADJ
iogr-1286	107	7	and	and	CCONJ
iogr-1286	107	8	older	old	ADJ
iogr-1286	107	9	,	,	PUNCT
iogr-1286	107	10	typically	typically	ADV
iogr-1286	107	11	have	have	VERB
iogr-1286	107	12	higher	high	ADJ
iogr-1286	107	13	carbon	carbon	NOUN
iogr-1286	107	14	content	content	NOUN
iogr-1286	107	15	and	and	CCONJ
iogr-1286	107	16	lower	low	ADJ
iogr-1286	107	17	moisture	moisture	NOUN
iogr-1286	107	18	and	and	CCONJ
iogr-1286	107	19	volatile	volatile	ADJ
iogr-1286	107	20	materials	material	NOUN
iogr-1286	107	21	.	.	PUNCT
iogr-1286	108	1	this	this	DET
iogr-1286	108	2	results	result	VERB
iogr-1286	108	3	in	in	ADP
iogr-1286	108	4	increased	increase	VERB
iogr-1286	108	5	carbon	carbon	NOUN
iogr-1286	108	6	dioxide	dioxide	NOUN
iogr-1286	108	7	(	(	PUNCT
iogr-1286	108	8	co2	co2	NOUN
iogr-1286	108	9	)	)	PUNCT
iogr-1286	108	10	production	production	NOUN
iogr-1286	108	11	during	during	ADP
iogr-1286	108	12	combustion	combustion	NOUN
iogr-1286	108	13	or	or	CCONJ
iogr-1286	108	14	gasification	gasification	NOUN
iogr-1286	108	15	,	,	PUNCT
iogr-1286	108	16	with	with	ADP
iogr-1286	108	17	fewer	few	ADJ
iogr-1286	108	18	volatile	volatile	ADJ
iogr-1286	108	19	gases	gas	NOUN
iogr-1286	108	20	such	such	ADJ
iogr-1286	108	21	as	as	ADP
iogr-1286	108	22	methane	methane	NOUN
iogr-1286	108	23	and	and	CCONJ
iogr-1286	108	24	hydrogen	hydrogen	NOUN
iogr-1286	108	25	.	.	PUNCT
iogr-1286	109	1	high	high	ADJ
iogr-1286	109	2	ash	ash	NOUN
iogr-1286	109	3	content	content	NOUN
iogr-1286	109	4	can	can	AUX
iogr-1286	109	5	lead	lead	VERB
iogr-1286	109	6	to	to	ADP
iogr-1286	109	7	increased	increase	VERB
iogr-1286	109	8	slagging	slagging	NOUN
iogr-1286	109	9	and	and	CCONJ
iogr-1286	109	10	fouling	foul	VERB
iogr-1286	109	11	in	in	ADP
iogr-1286	109	12	gasifiers	gasifier	NOUN
iogr-1286	109	13	,	,	PUNCT
iogr-1286	109	14	reducing	reduce	VERB
iogr-1286	109	15	gas	gas	NOUN
iogr-1286	109	16	production	production	NOUN
iogr-1286	109	17	efficiency	efficiency	NOUN
iogr-1286	109	18	and	and	CCONJ
iogr-1286	109	19	increasing	increase	VERB
iogr-1286	109	20	maintenance	maintenance	NOUN
iogr-1286	109	21	requirements	requirement	NOUN
iogr-1286	109	22	.	.	PUNCT
iogr-1286	110	1	additionally	additionally	ADV
iogr-1286	110	2	,	,	PUNCT
iogr-1286	110	3	inorganic	inorganic	ADJ
iogr-1286	110	4	chemicals	chemical	NOUN
iogr-1286	110	5	in	in	ADP
iogr-1286	110	6	ash	ash	NOUN
iogr-1286	110	7	may	may	AUX
iogr-1286	110	8	react	react	VERB
iogr-1286	110	9	with	with	ADP
iogr-1286	110	10	gas	gas	NOUN
iogr-1286	110	11	-	-	PUNCT
iogr-1286	110	12	forming	form	VERB
iogr-1286	110	13	compounds	compound	NOUN
iogr-1286	110	14	,	,	PUNCT
iogr-1286	110	15	potentially	potentially	ADV
iogr-1286	110	16	altering	alter	VERB
iogr-1286	110	17	the	the	DET
iogr-1286	110	18	gas	gas	NOUN
iogr-1286	110	19	composition	composition	NOUN
iogr-1286	110	20	.	.	PUNCT
iogr-1286	111	1	high	high	ADJ
iogr-1286	111	2	moisture	moisture	NOUN
iogr-1286	111	3	content	content	NOUN
iogr-1286	111	4	in	in	ADP
iogr-1286	111	5	gas	gas	NOUN
iogr-1286	111	6	can	can	AUX
iogr-1286	111	7	produce	produce	VERB
iogr-1286	111	8	water	water	NOUN
iogr-1286	111	9	vapor	vapor	NOUN
iogr-1286	111	10	,	,	PUNCT
iogr-1286	111	11	which	which	PRON
iogr-1286	111	12	may	may	AUX
iogr-1286	111	13	dilute	dilute	VERB
iogr-1286	111	14	the	the	DET
iogr-1286	111	15	desired	desire	VERB
iogr-1286	111	16	gas	gas	NOUN
iogr-1286	111	17	products	product	NOUN
iogr-1286	111	18	.	.	PUNCT
iogr-1286	112	1	improved	improve	VERB
iogr-1286	112	2	oil	oil	NOUN
iogr-1286	112	3	and	and	CCONJ
iogr-1286	112	4	gas	gas	NOUN
iogr-1286	112	5	recovery	recovery	NOUN
iogr-1286	112	6	6	6	NUM
iogr-1286	112	7	nigeria	nigeria	PROPN
iogr-1286	112	8	's	's	PART
iogr-1286	112	9	coal	coal	NOUN
iogr-1286	112	10	shows	show	VERB
iogr-1286	112	11	considerable	considerable	ADJ
iogr-1286	112	12	potential	potential	NOUN
iogr-1286	112	13	for	for	ADP
iogr-1286	112	14	combustion	combustion	NOUN
iogr-1286	112	15	processes	process	NOUN
iogr-1286	112	16	which	which	PRON
iogr-1286	112	17	involve	involve	VERB
iogr-1286	112	18	the	the	DET
iogr-1286	112	19	burning	burning	NOUN
iogr-1286	112	20	of	of	ADP
iogr-1286	112	21	coal	coal	NOUN
iogr-1286	112	22	to	to	PART
iogr-1286	112	23	release	release	VERB
iogr-1286	112	24	thermal	thermal	ADJ
iogr-1286	112	25	energy	energy	NOUN
iogr-1286	112	26	which	which	PRON
iogr-1286	112	27	can	can	AUX
iogr-1286	112	28	be	be	AUX
iogr-1286	112	29	used	use	VERB
iogr-1286	112	30	to	to	PART
iogr-1286	112	31	generate	generate	VERB
iogr-1286	112	32	electricity	electricity	NOUN
iogr-1286	112	33	,	,	PUNCT
iogr-1286	112	34	heat	heat	NOUN
iogr-1286	112	35	,	,	PUNCT
iogr-1286	112	36	or	or	CCONJ
iogr-1286	112	37	other	other	ADJ
iogr-1286	112	38	industrial	industrial	ADJ
iogr-1286	112	39	process	process	NOUN
iogr-1286	112	40	,	,	PUNCT
iogr-1286	112	41	as	as	SCONJ
iogr-1286	112	42	it	it	PRON
iogr-1286	112	43	contains	contain	VERB
iogr-1286	112	44	a	a	DET
iogr-1286	112	45	high	high	ADJ
iogr-1286	112	46	concentration	concentration	NOUN
iogr-1286	112	47	of	of	ADP
iogr-1286	112	48	volatile	volatile	ADJ
iogr-1286	112	49	matter	matter	NOUN
iogr-1286	112	50	,	,	PUNCT
iogr-1286	112	51	which	which	PRON
iogr-1286	112	52	facilitates	facilitate	VERB
iogr-1286	112	53	gas	gas	NOUN
iogr-1286	112	54	generation	generation	NOUN
iogr-1286	112	55	,	,	PUNCT
iogr-1286	112	56	including	include	VERB
iogr-1286	112	57	flammable	flammable	ADJ
iogr-1286	112	58	gases	gas	NOUN
iogr-1286	112	59	like	like	ADP
iogr-1286	112	60	methane	methane	NOUN
iogr-1286	112	61	,	,	PUNCT
iogr-1286	112	62	hydrogen	hydrogen	NOUN
iogr-1286	112	63	,	,	PUNCT
iogr-1286	112	64	and	and	CCONJ
iogr-1286	112	65	carbon	carbon	NOUN
iogr-1286	112	66	monoxide	monoxide	NOUN
iogr-1286	112	67	.	.	PUNCT
iogr-1286	113	1	the	the	DET
iogr-1286	113	2	specific	specific	ADJ
iogr-1286	113	3	gas	gas	NOUN
iogr-1286	113	4	products	product	NOUN
iogr-1286	113	5	can	can	AUX
iogr-1286	113	6	vary	vary	VERB
iogr-1286	113	7	based	base	VERB
iogr-1286	113	8	on	on	ADP
iogr-1286	113	9	the	the	DET
iogr-1286	113	10	volatile	volatile	ADJ
iogr-1286	113	11	matter	matter	NOUN
iogr-1286	113	12	composition	composition	NOUN
iogr-1286	113	13	and	and	CCONJ
iogr-1286	113	14	the	the	DET
iogr-1286	113	15	conditions	condition	NOUN
iogr-1286	113	16	of	of	ADP
iogr-1286	113	17	gasification	gasification	NOUN
iogr-1286	113	18	or	or	CCONJ
iogr-1286	113	19	combustion	combustion	NOUN
iogr-1286	113	20	.	.	PUNCT
iogr-1286	114	1	for	for	ADP
iogr-1286	114	2	example	example	NOUN
iogr-1286	114	3	,	,	PUNCT
iogr-1286	114	4	methane	methane	NOUN
iogr-1286	114	5	tends	tend	VERB
iogr-1286	114	6	to	to	PART
iogr-1286	114	7	be	be	AUX
iogr-1286	114	8	the	the	DET
iogr-1286	114	9	primary	primary	ADJ
iogr-1286	114	10	gas	gas	NOUN
iogr-1286	114	11	at	at	ADP
iogr-1286	114	12	lower	low	ADJ
iogr-1286	114	13	temperatures	temperature	NOUN
iogr-1286	114	14	,	,	PUNCT
iogr-1286	114	15	while	while	SCONJ
iogr-1286	114	16	higher	high	ADJ
iogr-1286	114	17	temperatures	temperature	NOUN
iogr-1286	114	18	may	may	AUX
iogr-1286	114	19	favor	favor	VERB
iogr-1286	114	20	the	the	DET
iogr-1286	114	21	production	production	NOUN
iogr-1286	114	22	of	of	ADP
iogr-1286	114	23	carbon	carbon	NOUN
iogr-1286	114	24	monoxide	monoxide	NOUN
iogr-1286	114	25	and	and	CCONJ
iogr-1286	114	26	hydrogen	hydrogen	NOUN
iogr-1286	114	27	.	.	PUNCT
iogr-1286	114	28	table	table	NOUN
iogr-1286	114	29	4	4	NUM
iogr-1286	114	30	provides	provide	VERB
iogr-1286	114	31	a	a	DET
iogr-1286	114	32	summary	summary	NOUN
iogr-1286	114	33	of	of	ADP
iogr-1286	114	34	the	the	DET
iogr-1286	114	35	reservoir	reservoir	PROPN
iogr-1286	114	36	characteristics	characteristic	NOUN
iogr-1286	114	37	.	.	PUNCT
iogr-1286	115	1	the	the	DET
iogr-1286	115	2	reservoir	reservoir	NOUN
iogr-1286	115	3	's	's	PART
iogr-1286	115	4	porosity	porosity	NOUN
iogr-1286	115	5	of	of	ADP
iogr-1286	115	6	1.9	1.9	NUM
iogr-1286	115	7	%	%	NOUN
iogr-1286	115	8	is	be	AUX
iogr-1286	115	9	considered	consider	VERB
iogr-1286	115	10	low	low	ADJ
iogr-1286	115	11	for	for	ADP
iogr-1286	115	12	a	a	DET
iogr-1286	115	13	coal	coal	NOUN
iogr-1286	115	14	-	-	PUNCT
iogr-1286	115	15	bed	bed	NOUN
iogr-1286	115	16	methane	methane	NOUN
iogr-1286	115	17	(	(	PUNCT
iogr-1286	115	18	cbm	cbm	PROPN
iogr-1286	115	19	)	)	PUNCT
iogr-1286	115	20	reservoir	reservoir	NOUN
iogr-1286	115	21	.	.	PUNCT
iogr-1286	116	1	typically	typically	ADV
iogr-1286	116	2	,	,	PUNCT
iogr-1286	116	3	a	a	DET
iogr-1286	116	4	porosity	porosity	NOUN
iogr-1286	116	5	greater	great	ADJ
iogr-1286	116	6	than	than	SCONJ
iogr-1286	116	7	5	5	NUM
iogr-1286	116	8	-	-	SYM
iogr-1286	116	9	10	10	NUM
iogr-1286	116	10	%	%	NOUN
iogr-1286	116	11	is	be	AUX
iogr-1286	116	12	preferred	prefer	VERB
iogr-1286	116	13	,	,	PUNCT
iogr-1286	116	14	as	as	SCONJ
iogr-1286	116	15	it	it	PRON
iogr-1286	116	16	enhances	enhance	VERB
iogr-1286	116	17	the	the	DET
iogr-1286	116	18	storage	storage	NOUN
iogr-1286	116	19	capacity	capacity	NOUN
iogr-1286	116	20	for	for	ADP
iogr-1286	116	21	methane	methane	NOUN
iogr-1286	116	22	.	.	PUNCT
iogr-1286	117	1	however	however	ADV
iogr-1286	117	2	,	,	PUNCT
iogr-1286	117	3	it	it	PRON
iogr-1286	117	4	is	be	AUX
iogr-1286	117	5	worth	worth	ADJ
iogr-1286	117	6	noting	note	VERB
iogr-1286	117	7	that	that	SCONJ
iogr-1286	117	8	even	even	ADV
iogr-1286	117	9	reservoirs	reservoir	NOUN
iogr-1286	117	10	with	with	ADP
iogr-1286	117	11	lower	low	ADJ
iogr-1286	117	12	porosity	porosity	NOUN
iogr-1286	117	13	can	can	AUX
iogr-1286	117	14	still	still	ADV
iogr-1286	117	15	be	be	AUX
iogr-1286	117	16	productive	productive	ADJ
iogr-1286	117	17	,	,	PUNCT
iogr-1286	117	18	as	as	SCONJ
iogr-1286	117	19	several	several	ADJ
iogr-1286	117	20	cbm	cbm	PROPN
iogr-1286	117	21	reservoirs	reservoir	NOUN
iogr-1286	117	22	with	with	ADP
iogr-1286	117	23	similar	similar	ADJ
iogr-1286	117	24	characteristics	characteristic	NOUN
iogr-1286	117	25	have	have	AUX
iogr-1286	117	26	successfully	successfully	ADV
iogr-1286	117	27	generated	generate	VERB
iogr-1286	117	28	gas	gas	NOUN
iogr-1286	117	29	.	.	PUNCT
iogr-1286	118	1	permeability	permeability	NOUN
iogr-1286	118	2	of	of	ADP
iogr-1286	118	3	45	45	NUM
iogr-1286	118	4	millidarcies	millidarcie	NOUN
iogr-1286	118	5	is	be	AUX
iogr-1286	118	6	considered	consider	VERB
iogr-1286	118	7	moderate	moderate	ADJ
iogr-1286	118	8	to	to	PART
iogr-1286	118	9	good	good	ADJ
iogr-1286	118	10	for	for	ADP
iogr-1286	118	11	coal	coal	NOUN
iogr-1286	118	12	beds	bed	NOUN
iogr-1286	118	13	.	.	PUNCT
iogr-1286	119	1	while	while	SCONJ
iogr-1286	119	2	methane	methane	NOUN
iogr-1286	119	3	flow	flow	NOUN
iogr-1286	119	4	through	through	ADP
iogr-1286	119	5	coal	coal	NOUN
iogr-1286	119	6	seams	seam	NOUN
iogr-1286	119	7	is	be	AUX
iogr-1286	119	8	generally	generally	ADV
iogr-1286	119	9	more	more	ADV
iogr-1286	119	10	efficient	efficient	ADJ
iogr-1286	119	11	at	at	ADP
iogr-1286	119	12	higher	high	ADJ
iogr-1286	119	13	permeability	permeability	NOUN
iogr-1286	119	14	levels	level	NOUN
iogr-1286	119	15	,	,	PUNCT
iogr-1286	119	16	significant	significant	ADJ
iogr-1286	119	17	gas	gas	NOUN
iogr-1286	119	18	production	production	NOUN
iogr-1286	119	19	can	can	AUX
iogr-1286	119	20	still	still	ADV
iogr-1286	119	21	occur	occur	VERB
iogr-1286	119	22	at	at	ADP
iogr-1286	119	23	lower	low	ADJ
iogr-1286	119	24	permeability	permeability	NOUN
iogr-1286	119	25	values	value	NOUN
iogr-1286	119	26	.	.	PUNCT
iogr-1286	120	1	the	the	DET
iogr-1286	120	2	coal	coal	NOUN
iogr-1286	120	3	seam	seam	NOUN
iogr-1286	120	4	thickness	thickness	NOUN
iogr-1286	120	5	of	of	ADP
iogr-1286	120	6	1.7	1.7	NUM
iogr-1286	120	7	meters	meter	NOUN
iogr-1286	120	8	,	,	PUNCT
iogr-1286	120	9	though	though	SCONJ
iogr-1286	120	10	not	not	PART
iogr-1286	120	11	very	very	ADV
iogr-1286	120	12	substantial	substantial	ADJ
iogr-1286	120	13	,	,	PUNCT
iogr-1286	120	14	can	can	AUX
iogr-1286	120	15	be	be	AUX
iogr-1286	120	16	viable	viable	ADJ
iogr-1286	120	17	for	for	ADP
iogr-1286	120	18	extraction	extraction	NOUN
iogr-1286	120	19	if	if	SCONJ
iogr-1286	120	20	the	the	DET
iogr-1286	120	21	porosity	porosity	NOUN
iogr-1286	120	22	and	and	CCONJ
iogr-1286	120	23	permeability	permeability	NOUN
iogr-1286	120	24	are	be	AUX
iogr-1286	120	25	adequate	adequate	ADJ
iogr-1286	120	26	.	.	PUNCT
iogr-1286	121	1	thicker	thick	ADJ
iogr-1286	121	2	coal	coal	NOUN
iogr-1286	121	3	seams	seam	NOUN
iogr-1286	121	4	typically	typically	ADV
iogr-1286	121	5	offer	offer	VERB
iogr-1286	121	6	more	more	ADJ
iogr-1286	121	7	storage	storage	NOUN
iogr-1286	121	8	capacity	capacity	NOUN
iogr-1286	121	9	for	for	ADP
iogr-1286	121	10	gas	gas	NOUN
iogr-1286	121	11	,	,	PUNCT
iogr-1286	121	12	which	which	PRON
iogr-1286	121	13	can	can	AUX
iogr-1286	121	14	lead	lead	VERB
iogr-1286	121	15	to	to	ADP
iogr-1286	121	16	higher	high	ADJ
iogr-1286	121	17	production	production	NOUN
iogr-1286	121	18	rates	rate	NOUN
iogr-1286	121	19	.	.	PUNCT
iogr-1286	122	1	table	table	NOUN
iogr-1286	122	2	4	4	NUM
iogr-1286	122	3	—	—	PUNCT
iogr-1286	122	4	average	average	ADJ
iogr-1286	122	5	reservoir	reservoir	NOUN
iogr-1286	122	6	data	data	PROPN
iogr-1286	122	7	.	.	PUNCT
iogr-1286	123	1	coal	coal	NOUN
iogr-1286	123	2	thickness	thickness	NOUN
iogr-1286	123	3	(	(	PUNCT
iogr-1286	123	4	m	m	NOUN
iogr-1286	123	5	)	)	PUNCT
iogr-1286	123	6	1.7	1.7	NUM
iogr-1286	123	7	porosity	porosity	NOUN
iogr-1286	123	8	(	(	PUNCT
iogr-1286	123	9	%	%	INTJ
iogr-1286	123	10	)	)	PUNCT
iogr-1286	123	11	1.9	1.9	NUM
iogr-1286	123	12	permeability	permeability	NOUN
iogr-1286	123	13	(	(	PUNCT
iogr-1286	123	14	md	md	PROPN
iogr-1286	123	15	)	)	PUNCT
iogr-1286	123	16	45	45	NUM
iogr-1286	123	17	density	density	NOUN
iogr-1286	123	18	(	(	PUNCT
iogr-1286	123	19	g	g	NOUN
iogr-1286	123	20	/	/	SYM
iogr-1286	123	21	m3	m3	PROPN
iogr-1286	123	22	)	)	PUNCT
iogr-1286	123	23	1.4	1.4	NUM
iogr-1286	123	24	specific	specific	ADJ
iogr-1286	123	25	gravity	gravity	NOUN
iogr-1286	123	26	1.33	1.33	NUM
iogr-1286	123	27	coalbed	coalbe	VERB
iogr-1286	123	28	methane	methane	NOUN
iogr-1286	123	29	(	(	PUNCT
iogr-1286	123	30	cbm	cbm	PROPN
iogr-1286	123	31	)	)	PUNCT
iogr-1286	123	32	reserve	reserve	PROPN
iogr-1286	123	33	.	.	PUNCT
iogr-1286	124	1	the	the	DET
iogr-1286	124	2	cbm	cbm	PROPN
iogr-1286	124	3	reserves	reserve	NOUN
iogr-1286	124	4	across	across	ADP
iogr-1286	124	5	these	these	DET
iogr-1286	124	6	four	four	NUM
iogr-1286	124	7	basins	basin	NOUN
iogr-1286	124	8	have	have	AUX
iogr-1286	124	9	been	be	AUX
iogr-1286	124	10	evaluated	evaluate	VERB
iogr-1286	124	11	based	base	VERB
iogr-1286	124	12	on	on	ADP
iogr-1286	124	13	an	an	DET
iogr-1286	124	14	average	average	ADJ
iogr-1286	124	15	gas	gas	NOUN
iogr-1286	124	16	content	content	NOUN
iogr-1286	124	17	of	of	ADP
iogr-1286	124	18	312.14	312.14	NUM
iogr-1286	124	19	standard	standard	ADJ
iogr-1286	124	20	cubic	cubic	ADJ
iogr-1286	124	21	feet	foot	NOUN
iogr-1286	124	22	per	per	ADP
iogr-1286	124	23	ton	ton	NOUN
iogr-1286	124	24	of	of	ADP
iogr-1286	124	25	coal	coal	NOUN
iogr-1286	124	26	.	.	PUNCT
iogr-1286	125	1	figure	figure	NOUN
iogr-1286	125	2	2	2	NUM
iogr-1286	125	3	provides	provide	VERB
iogr-1286	125	4	a	a	DET
iogr-1286	125	5	graphical	graphical	ADJ
iogr-1286	125	6	representation	representation	NOUN
iogr-1286	125	7	of	of	ADP
iogr-1286	125	8	the	the	DET
iogr-1286	125	9	gas	gas	NOUN
iogr-1286	125	10	reserves	reserve	NOUN
iogr-1286	125	11	in	in	ADP
iogr-1286	125	12	each	each	PRON
iogr-1286	125	13	of	of	ADP
iogr-1286	125	14	these	these	DET
iogr-1286	125	15	basins	basin	NOUN
iogr-1286	125	16	.	.	PUNCT
iogr-1286	126	1	figure	figure	NOUN
iogr-1286	126	2	2	2	NUM
iogr-1286	126	3	—	—	PUNCT
iogr-1286	126	4	estimated	estimate	VERB
iogr-1286	126	5	gas	gas	NOUN
iogr-1286	126	6	proven	prove	VERB
iogr-1286	126	7	reserve	reserve	PROPN
iogr-1286	126	8	.	.	PUNCT
iogr-1286	127	1	improved	improve	VERB
iogr-1286	127	2	oil	oil	NOUN
iogr-1286	127	3	and	and	CCONJ
iogr-1286	127	4	gas	gas	NOUN
iogr-1286	127	5	recovery	recovery	NOUN
iogr-1286	127	6	7	7	NUM
iogr-1286	127	7	depths	depth	NOUN
iogr-1286	127	8	of	of	ADP
iogr-1286	127	9	the	the	DET
iogr-1286	127	10	seams	seam	NOUN
iogr-1286	127	11	.	.	PUNCT
iogr-1286	128	1	the	the	DET
iogr-1286	128	2	coal	coal	NOUN
iogr-1286	128	3	seams	seam	NOUN
iogr-1286	128	4	in	in	ADP
iogr-1286	128	5	the	the	DET
iogr-1286	128	6	owukpa	owukpa	ADJ
iogr-1286	128	7	,	,	PUNCT
iogr-1286	128	8	okaba	okaba	ADJ
iogr-1286	128	9	,	,	PUNCT
iogr-1286	128	10	and	and	CCONJ
iogr-1286	128	11	onyeama	onyeama	NOUN
iogr-1286	128	12	fields	field	NOUN
iogr-1286	128	13	are	be	AUX
iogr-1286	128	14	approximately	approximately	ADV
iogr-1286	128	15	100	100	NUM
iogr-1286	128	16	meters	meter	NOUN
iogr-1286	128	17	deep	deep	ADJ
iogr-1286	128	18	,	,	PUNCT
iogr-1286	128	19	close	close	ADJ
iogr-1286	128	20	to	to	ADP
iogr-1286	128	21	the	the	DET
iogr-1286	128	22	surface	surface	NOUN
iogr-1286	128	23	,	,	PUNCT
iogr-1286	128	24	while	while	SCONJ
iogr-1286	128	25	the	the	DET
iogr-1286	128	26	okpara	okpara	NOUN
iogr-1286	128	27	basin	basin	NOUN
iogr-1286	128	28	features	feature	VERB
iogr-1286	128	29	coal	coal	NOUN
iogr-1286	128	30	seams	seam	NOUN
iogr-1286	128	31	at	at	ADP
iogr-1286	128	32	a	a	DET
iogr-1286	128	33	depth	depth	NOUN
iogr-1286	128	34	of	of	ADP
iogr-1286	128	35	180	180	NUM
iogr-1286	128	36	meters	meter	NOUN
iogr-1286	128	37	.	.	PUNCT
iogr-1286	129	1	compared	compare	VERB
iogr-1286	129	2	to	to	ADP
iogr-1286	129	3	other	other	ADJ
iogr-1286	129	4	cbm	cbm	PROPN
iogr-1286	129	5	basins	basin	NOUN
iogr-1286	129	6	globally	globally	ADV
iogr-1286	129	7	,	,	PUNCT
iogr-1286	129	8	the	the	DET
iogr-1286	129	9	shallow	shallow	ADJ
iogr-1286	129	10	depth	depth	NOUN
iogr-1286	129	11	of	of	ADP
iogr-1286	129	12	nigerian	nigerian	ADJ
iogr-1286	129	13	coal	coal	NOUN
iogr-1286	129	14	suggests	suggest	VERB
iogr-1286	129	15	that	that	SCONJ
iogr-1286	129	16	it	it	PRON
iogr-1286	129	17	can	can	AUX
iogr-1286	129	18	be	be	AUX
iogr-1286	129	19	readily	readily	ADV
iogr-1286	129	20	extracted	extract	VERB
iogr-1286	129	21	through	through	ADP
iogr-1286	129	22	pit	pit	NOUN
iogr-1286	129	23	mining	mining	NOUN
iogr-1286	129	24	.	.	PUNCT
iogr-1286	130	1	figure	figure	NOUN
iogr-1286	130	2	3	3	NUM
iogr-1286	130	3	shows	show	VERB
iogr-1286	130	4	a	a	DET
iogr-1286	130	5	comparison	comparison	NOUN
iogr-1286	130	6	of	of	ADP
iogr-1286	130	7	the	the	DET
iogr-1286	130	8	seam	seam	NOUN
iogr-1286	130	9	depths	depth	NOUN
iogr-1286	130	10	of	of	ADP
iogr-1286	130	11	nigeria	nigeria	PROPN
iogr-1286	130	12	's	's	PART
iogr-1286	130	13	cbm	cbm	PROPN
iogr-1286	130	14	basins	basin	NOUN
iogr-1286	130	15	with	with	ADP
iogr-1286	130	16	those	those	PRON
iogr-1286	130	17	of	of	ADP
iogr-1286	130	18	cbm	cbm	PROPN
iogr-1286	130	19	basins	basin	NOUN
iogr-1286	130	20	worldwide	worldwide	ADV
iogr-1286	130	21	.	.	PUNCT
iogr-1286	131	1	figure	figure	VERB
iogr-1286	131	2	3	3	NUM
iogr-1286	131	3	—	—	PUNCT
iogr-1286	131	4	comparison	comparison	NOUN
iogr-1286	131	5	of	of	ADP
iogr-1286	131	6	seams	seam	NOUN
iogr-1286	131	7	depth	depth	NOUN
iogr-1286	131	8	.	.	PUNCT
iogr-1286	132	1	moisture	moisture	NOUN
iogr-1286	132	2	content	content	NOUN
iogr-1286	132	3	analysis	analysis	NOUN
iogr-1286	132	4	.	.	PUNCT
iogr-1286	133	1	in	in	ADP
iogr-1286	133	2	comparison	comparison	NOUN
iogr-1286	133	3	to	to	ADP
iogr-1286	133	4	the	the	DET
iogr-1286	133	5	other	other	ADJ
iogr-1286	133	6	four	four	NUM
iogr-1286	133	7	nigerian	nigerian	ADJ
iogr-1286	133	8	basins	basin	NOUN
iogr-1286	133	9	,	,	PUNCT
iogr-1286	133	10	as	as	SCONJ
iogr-1286	133	11	illustrated	illustrate	VERB
iogr-1286	133	12	in	in	ADP
iogr-1286	133	13	figure	figure	NOUN
iogr-1286	133	14	4	4	NUM
iogr-1286	133	15	,	,	PUNCT
iogr-1286	133	16	okpara	okpara	NOUN
iogr-1286	133	17	coal	coal	NOUN
iogr-1286	133	18	exhibits	exhibit	VERB
iogr-1286	133	19	the	the	DET
iogr-1286	133	20	lowest	low	ADJ
iogr-1286	133	21	moisture	moisture	NOUN
iogr-1286	133	22	content	content	NOUN
iogr-1286	133	23	.	.	PUNCT
iogr-1286	134	1	the	the	DET
iogr-1286	134	2	highest	high	ADJ
iogr-1286	134	3	moisture	moisture	NOUN
iogr-1286	134	4	content	content	NOUN
iogr-1286	134	5	is	be	AUX
iogr-1286	134	6	observed	observe	VERB
iogr-1286	134	7	in	in	ADP
iogr-1286	134	8	coal	coal	NOUN
iogr-1286	134	9	from	from	ADP
iogr-1286	134	10	the	the	DET
iogr-1286	134	11	united	united	PROPN
iogr-1286	134	12	states	states	PROPN
iogr-1286	134	13	,	,	PUNCT
iogr-1286	134	14	whereas	whereas	SCONJ
iogr-1286	134	15	coal	coal	NOUN
iogr-1286	134	16	from	from	ADP
iogr-1286	134	17	china	china	PROPN
iogr-1286	134	18	has	have	VERB
iogr-1286	134	19	a	a	DET
iogr-1286	134	20	relatively	relatively	ADV
iogr-1286	134	21	low	low	ADJ
iogr-1286	134	22	moisture	moisture	NOUN
iogr-1286	134	23	level	level	NOUN
iogr-1286	134	24	of	of	ADP
iogr-1286	134	25	1.02	1.02	NUM
iogr-1286	134	26	%	%	NOUN
iogr-1286	134	27	.	.	PUNCT
iogr-1286	135	1	nigerian	nigerian	ADJ
iogr-1286	135	2	coal	coal	NOUN
iogr-1286	135	3	averages	average	NOUN
iogr-1286	135	4	10.95	10.95	NUM
iogr-1286	135	5	%	%	NOUN
iogr-1286	135	6	moisture	moisture	NOUN
iogr-1286	135	7	,	,	PUNCT
iogr-1286	135	8	which	which	PRON
iogr-1286	135	9	is	be	AUX
iogr-1286	135	10	similar	similar	ADJ
iogr-1286	135	11	to	to	ADP
iogr-1286	135	12	that	that	PRON
iogr-1286	135	13	of	of	ADP
iogr-1286	135	14	australian	australian	ADJ
iogr-1286	135	15	coal	coal	NOUN
iogr-1286	135	16	.	.	PUNCT
iogr-1286	136	1	this	this	DET
iogr-1286	136	2	low	low	ADJ
iogr-1286	136	3	moisture	moisture	NOUN
iogr-1286	136	4	content	content	NOUN
iogr-1286	136	5	enhances	enhance	VERB
iogr-1286	136	6	power	power	NOUN
iogr-1286	136	7	plant	plant	NOUN
iogr-1286	136	8	efficiency	efficiency	NOUN
iogr-1286	136	9	and	and	CCONJ
iogr-1286	136	10	reduces	reduce	VERB
iogr-1286	136	11	coal	coal	NOUN
iogr-1286	136	12	transportation	transportation	NOUN
iogr-1286	136	13	costs	cost	NOUN
iogr-1286	136	14	,	,	PUNCT
iogr-1286	136	15	indicating	indicate	VERB
iogr-1286	136	16	that	that	SCONJ
iogr-1286	136	17	nigeria	nigeria	PROPN
iogr-1286	136	18	's	's	PART
iogr-1286	136	19	coal	coal	NOUN
iogr-1286	136	20	holds	hold	VERB
iogr-1286	136	21	significant	significant	ADJ
iogr-1286	136	22	potential	potential	NOUN
iogr-1286	136	23	for	for	ADP
iogr-1286	136	24	power	power	NOUN
iogr-1286	136	25	generation	generation	NOUN
iogr-1286	136	26	.	.	PUNCT
iogr-1286	137	1	figure	figure	VERB
iogr-1286	137	2	4	4	NUM
iogr-1286	137	3	—	—	PUNCT
iogr-1286	137	4	comparison	comparison	NOUN
iogr-1286	137	5	of	of	ADP
iogr-1286	137	6	moisture	moisture	NOUN
iogr-1286	137	7	content	content	NOUN
iogr-1286	137	8	.	.	PUNCT
iogr-1286	138	1	improved	improve	VERB
iogr-1286	138	2	oil	oil	NOUN
iogr-1286	138	3	and	and	CCONJ
iogr-1286	138	4	gas	gas	NOUN
iogr-1286	138	5	recovery	recovery	NOUN
iogr-1286	138	6	8	8	NUM
iogr-1286	138	7	ash	ash	NOUN
iogr-1286	138	8	content	content	NOUN
iogr-1286	138	9	.	.	PUNCT
iogr-1286	139	1	coal	coal	NOUN
iogr-1286	139	2	from	from	ADP
iogr-1286	139	3	the	the	DET
iogr-1286	139	4	onyeama	onyeama	NOUN
iogr-1286	139	5	field	field	NOUN
iogr-1286	139	6	is	be	AUX
iogr-1286	139	7	noted	note	VERB
iogr-1286	139	8	for	for	ADP
iogr-1286	139	9	its	its	PRON
iogr-1286	139	10	low	low	ADJ
iogr-1286	139	11	ash	ash	NOUN
iogr-1286	139	12	content	content	NOUN
iogr-1286	139	13	compared	compare	VERB
iogr-1286	139	14	to	to	ADP
iogr-1286	139	15	other	other	ADJ
iogr-1286	139	16	analyzed	analyze	VERB
iogr-1286	139	17	basins	basin	NOUN
iogr-1286	139	18	,	,	PUNCT
iogr-1286	139	19	while	while	SCONJ
iogr-1286	139	20	coal	coal	NOUN
iogr-1286	139	21	from	from	ADP
iogr-1286	139	22	india	india	PROPN
iogr-1286	139	23	shows	show	VERB
iogr-1286	139	24	a	a	DET
iogr-1286	139	25	higher	high	ADJ
iogr-1286	139	26	ash	ash	NOUN
iogr-1286	139	27	value	value	NOUN
iogr-1286	139	28	.	.	PUNCT
iogr-1286	140	1	the	the	DET
iogr-1286	140	2	average	average	ADJ
iogr-1286	140	3	ash	ash	NOUN
iogr-1286	140	4	concentration	concentration	NOUN
iogr-1286	140	5	in	in	ADP
iogr-1286	140	6	nigerian	nigerian	ADJ
iogr-1286	140	7	coal	coal	NOUN
iogr-1286	140	8	is	be	AUX
iogr-1286	140	9	6.99	6.99	NUM
iogr-1286	140	10	%	%	NOUN
iogr-1286	140	11	,	,	PUNCT
iogr-1286	140	12	which	which	PRON
iogr-1286	140	13	is	be	AUX
iogr-1286	140	14	comparable	comparable	ADJ
iogr-1286	140	15	to	to	ADP
iogr-1286	140	16	that	that	PRON
iogr-1286	140	17	of	of	ADP
iogr-1286	140	18	the	the	DET
iogr-1286	140	19	powder	powder	NOUN
iogr-1286	140	20	river	river	NOUN
iogr-1286	140	21	basin	basin	NOUN
iogr-1286	140	22	in	in	ADP
iogr-1286	140	23	the	the	DET
iogr-1286	140	24	united	united	PROPN
iogr-1286	140	25	states	states	PROPN
iogr-1286	140	26	.	.	PUNCT
iogr-1286	141	1	these	these	DET
iogr-1286	141	2	figures	figure	NOUN
iogr-1286	141	3	are	be	AUX
iogr-1286	141	4	considered	consider	VERB
iogr-1286	141	5	favorable	favorable	ADJ
iogr-1286	141	6	since	since	SCONJ
iogr-1286	141	7	coal	coal	NOUN
iogr-1286	141	8	with	with	ADP
iogr-1286	141	9	high	high	ADJ
iogr-1286	141	10	ash	ash	NOUN
iogr-1286	141	11	content	content	NOUN
iogr-1286	141	12	can	can	AUX
iogr-1286	141	13	lead	lead	VERB
iogr-1286	141	14	to	to	ADP
iogr-1286	141	15	environmental	environmental	ADJ
iogr-1286	141	16	pollution	pollution	NOUN
iogr-1286	141	17	(	(	PUNCT
iogr-1286	141	18	air	air	NOUN
iogr-1286	141	19	,	,	PUNCT
iogr-1286	141	20	water	water	NOUN
iogr-1286	141	21	,	,	PUNCT
iogr-1286	141	22	and	and	CCONJ
iogr-1286	141	23	land	land	NOUN
iogr-1286	141	24	)	)	PUNCT
iogr-1286	141	25	and	and	CCONJ
iogr-1286	141	26	reduce	reduce	VERB
iogr-1286	141	27	the	the	DET
iogr-1286	141	28	efficiency	efficiency	NOUN
iogr-1286	141	29	of	of	ADP
iogr-1286	141	30	combustion	combustion	NOUN
iogr-1286	141	31	boilers	boiler	NOUN
iogr-1286	141	32	used	use	VERB
iogr-1286	141	33	for	for	ADP
iogr-1286	141	34	power	power	NOUN
iogr-1286	141	35	generation	generation	NOUN
iogr-1286	141	36	.	.	PUNCT
iogr-1286	142	1	indian	indian	ADJ
iogr-1286	142	2	coal	coal	NOUN
iogr-1286	142	3	,	,	PUNCT
iogr-1286	142	4	with	with	ADP
iogr-1286	142	5	its	its	PRON
iogr-1286	142	6	high	high	ADJ
iogr-1286	142	7	ash	ash	NOUN
iogr-1286	142	8	content	content	NOUN
iogr-1286	142	9	,	,	PUNCT
iogr-1286	142	10	poses	pose	VERB
iogr-1286	142	11	environmental	environmental	ADJ
iogr-1286	142	12	challenges	challenge	NOUN
iogr-1286	142	13	and	and	CCONJ
iogr-1286	142	14	is	be	AUX
iogr-1286	142	15	less	less	ADV
iogr-1286	142	16	suitable	suitable	ADJ
iogr-1286	142	17	for	for	ADP
iogr-1286	142	18	use	use	NOUN
iogr-1286	142	19	in	in	ADP
iogr-1286	142	20	power	power	NOUN
iogr-1286	142	21	sectors	sector	NOUN
iogr-1286	142	22	.	.	PUNCT
iogr-1286	143	1	as	as	SCONJ
iogr-1286	143	2	shown	show	VERB
iogr-1286	143	3	in	in	ADP
iogr-1286	143	4	figure	figure	NOUN
iogr-1286	143	5	5	5	NUM
iogr-1286	143	6	,	,	PUNCT
iogr-1286	143	7	coal	coal	NOUN
iogr-1286	143	8	from	from	ADP
iogr-1286	143	9	nigeria	nigeria	PROPN
iogr-1286	143	10	and	and	CCONJ
iogr-1286	143	11	the	the	DET
iogr-1286	143	12	united	united	PROPN
iogr-1286	143	13	states	states	PROPN
iogr-1286	143	14	is	be	AUX
iogr-1286	143	15	relatively	relatively	ADV
iogr-1286	143	16	pure	pure	ADJ
iogr-1286	143	17	in	in	ADP
iogr-1286	143	18	comparison	comparison	NOUN
iogr-1286	143	19	.	.	PUNCT
iogr-1286	144	1	figure	figure	NOUN
iogr-1286	144	2	5	5	NUM
iogr-1286	144	3	—	—	PUNCT
iogr-1286	144	4	result	result	NOUN
iogr-1286	144	5	of	of	ADP
iogr-1286	144	6	ash	ash	NOUN
iogr-1286	144	7	content	content	NOUN
iogr-1286	144	8	.	.	PUNCT
iogr-1286	145	1	figure	figure	VERB
iogr-1286	145	2	6	6	NUM
iogr-1286	145	3	—	—	PUNCT
iogr-1286	145	4	volatile	volatile	ADJ
iogr-1286	145	5	matter	matter	NOUN
iogr-1286	145	6	comparison	comparison	NOUN
iogr-1286	145	7	analysis	analysis	NOUN
iogr-1286	145	8	.	.	PUNCT
iogr-1286	146	1	volatile	volatile	ADJ
iogr-1286	146	2	matter	matter	NOUN
iogr-1286	146	3	.	.	PUNCT
iogr-1286	147	1	the	the	DET
iogr-1286	147	2	four	four	NUM
iogr-1286	147	3	nigerian	nigerian	ADJ
iogr-1286	147	4	basins	basin	NOUN
iogr-1286	147	5	exhibit	exhibit	VERB
iogr-1286	147	6	high	high	ADJ
iogr-1286	147	7	concentrations	concentration	NOUN
iogr-1286	147	8	of	of	ADP
iogr-1286	147	9	volatile	volatile	ADJ
iogr-1286	147	10	matter	matter	NOUN
iogr-1286	147	11	(	(	PUNCT
iogr-1286	147	12	vm	vm	NOUN
iogr-1286	147	13	)	)	PUNCT
iogr-1286	147	14	,	,	PUNCT
iogr-1286	147	15	averaging	average	VERB
iogr-1286	147	16	33.82	33.82	NUM
iogr-1286	147	17	%	%	NOUN
iogr-1286	147	18	,	,	PUNCT
iogr-1286	147	19	surpassing	surpass	VERB
iogr-1286	147	20	those	those	PRON
iogr-1286	147	21	of	of	ADP
iogr-1286	147	22	all	all	DET
iogr-1286	147	23	other	other	ADJ
iogr-1286	147	24	basins	basin	NOUN
iogr-1286	147	25	except	except	SCONJ
iogr-1286	147	26	the	the	DET
iogr-1286	147	27	powder	powder	NOUN
iogr-1286	147	28	river	river	NOUN
iogr-1286	147	29	basin	basin	NOUN
iogr-1286	147	30	in	in	ADP
iogr-1286	147	31	the	the	DET
iogr-1286	147	32	united	united	PROPN
iogr-1286	147	33	states	states	PROPN
iogr-1286	147	34	.	.	PUNCT
iogr-1286	148	1	chinese	chinese	ADJ
iogr-1286	148	2	coal	coal	NOUN
iogr-1286	148	3	,	,	PUNCT
iogr-1286	148	4	in	in	ADP
iogr-1286	148	5	contrast	contrast	NOUN
iogr-1286	148	6	,	,	PUNCT
iogr-1286	148	7	has	have	VERB
iogr-1286	148	8	the	the	DET
iogr-1286	148	9	lowest	low	ADJ
iogr-1286	148	10	volatile	volatile	ADJ
iogr-1286	148	11	matter	matter	NOUN
iogr-1286	148	12	concentration	concentration	NOUN
iogr-1286	148	13	.	.	PUNCT
iogr-1286	149	1	the	the	DET
iogr-1286	149	2	elevated	elevated	ADJ
iogr-1286	149	3	volatile	volatile	ADJ
iogr-1286	149	4	matter	matter	NOUN
iogr-1286	149	5	content	content	NOUN
iogr-1286	149	6	in	in	ADP
iogr-1286	149	7	nigerian	nigerian	ADJ
iogr-1286	149	8	coal	coal	NOUN
iogr-1286	149	9	requires	require	VERB
iogr-1286	149	10	moderate	moderate	ADJ
iogr-1286	149	11	temperatures	temperature	NOUN
iogr-1286	149	12	for	for	ADP
iogr-1286	149	13	effective	effective	ADJ
iogr-1286	149	14	combustion	combustion	NOUN
iogr-1286	149	15	of	of	ADP
iogr-1286	149	16	the	the	DET
iogr-1286	149	17	coal	coal	NOUN
iogr-1286	149	18	dust	dust	NOUN
iogr-1286	149	19	.	.	PUNCT
iogr-1286	150	1	figure	figure	NOUN
iogr-1286	150	2	6	6	NUM
iogr-1286	150	3	illustrates	illustrate	VERB
iogr-1286	150	4	the	the	DET
iogr-1286	150	5	volatile	volatile	ADJ
iogr-1286	150	6	matter	matter	NOUN
iogr-1286	150	7	levels	level	NOUN
iogr-1286	150	8	in	in	ADP
iogr-1286	150	9	the	the	DET
iogr-1286	150	10	nigerian	nigerian	ADJ
iogr-1286	150	11	basins	basin	NOUN
iogr-1286	150	12	and	and	CCONJ
iogr-1286	150	13	compares	compare	VERB
iogr-1286	150	14	them	they	PRON
iogr-1286	150	15	with	with	ADP
iogr-1286	150	16	those	those	PRON
iogr-1286	150	17	in	in	ADP
iogr-1286	150	18	other	other	ADJ
iogr-1286	150	19	cbm	cbm	ADJ
iogr-1286	150	20	-	-	PUNCT
iogr-1286	150	21	producing	produce	VERB
iogr-1286	150	22	countries	country	NOUN
iogr-1286	150	23	.	.	PUNCT
iogr-1286	151	1	additionally	additionally	ADV
iogr-1286	151	2	,	,	PUNCT
iogr-1286	151	3	improved	improved	ADJ
iogr-1286	151	4	oil	oil	NOUN
iogr-1286	151	5	and	and	CCONJ
iogr-1286	151	6	gas	gas	NOUN
iogr-1286	151	7	recovery	recovery	NOUN
iogr-1286	151	8	9	9	NUM
iogr-1286	151	9	the	the	DET
iogr-1286	151	10	high	high	ADJ
iogr-1286	151	11	volatile	volatile	ADJ
iogr-1286	151	12	matter	matter	NOUN
iogr-1286	151	13	content	content	NOUN
iogr-1286	151	14	suggests	suggest	VERB
iogr-1286	151	15	that	that	SCONJ
iogr-1286	151	16	nigeria	nigeria	PROPN
iogr-1286	151	17	's	's	PART
iogr-1286	151	18	coal	coal	NOUN
iogr-1286	151	19	rank	rank	NOUN
iogr-1286	151	20	is	be	AUX
iogr-1286	151	21	low	low	ADJ
iogr-1286	151	22	and	and	CCONJ
iogr-1286	151	23	of	of	ADP
iogr-1286	151	24	average	average	ADJ
iogr-1286	151	25	grade	grade	NOUN
iogr-1286	151	26	,	,	PUNCT
iogr-1286	151	27	as	as	SCONJ
iogr-1286	151	28	lower	low	ADJ
iogr-1286	151	29	volatile	volatile	ADJ
iogr-1286	151	30	matter	matter	NOUN
iogr-1286	151	31	typically	typically	ADV
iogr-1286	151	32	indicates	indicate	VERB
iogr-1286	151	33	higher	high	ADJ
iogr-1286	151	34	coal	coal	NOUN
iogr-1286	151	35	rank	rank	NOUN
iogr-1286	151	36	.	.	PUNCT
iogr-1286	152	1	conclusions	conclusion	NOUN
iogr-1286	152	2	the	the	DET
iogr-1286	152	3	study	study	NOUN
iogr-1286	152	4	estimates	estimate	VERB
iogr-1286	152	5	the	the	DET
iogr-1286	152	6	proven	prove	VERB
iogr-1286	152	7	coalbed	coalbe	VERB
iogr-1286	152	8	methane	methane	NOUN
iogr-1286	152	9	(	(	PUNCT
iogr-1286	152	10	cbm	cbm	NOUN
iogr-1286	152	11	)	)	PUNCT
iogr-1286	152	12	reserves	reserve	NOUN
iogr-1286	152	13	in	in	ADP
iogr-1286	152	14	the	the	DET
iogr-1286	152	15	four	four	NUM
iogr-1286	152	16	nigerian	nigerian	ADJ
iogr-1286	152	17	basins	basin	NOUN
iogr-1286	152	18	at	at	ADP
iogr-1286	152	19	194	194	NUM
iogr-1286	152	20	million	million	NUM
iogr-1286	152	21	tons	ton	NOUN
iogr-1286	152	22	of	of	ADP
iogr-1286	152	23	coal	coal	NOUN
iogr-1286	152	24	,	,	PUNCT
iogr-1286	152	25	which	which	PRON
iogr-1286	152	26	translates	translate	VERB
iogr-1286	152	27	to	to	ADP
iogr-1286	152	28	approximately	approximately	ADV
iogr-1286	152	29	60	60	NUM
iogr-1286	152	30	trillion	trillion	NUM
iogr-1286	152	31	cubic	cubic	ADJ
iogr-1286	152	32	feet	foot	NOUN
iogr-1286	152	33	(	(	PUNCT
iogr-1286	152	34	tcf	tcf	PROPN
iogr-1286	152	35	)	)	PUNCT
iogr-1286	152	36	of	of	ADP
iogr-1286	152	37	cbm	cbm	PROPN
iogr-1286	152	38	,	,	PUNCT
iogr-1286	152	39	given	give	VERB
iogr-1286	152	40	a	a	DET
iogr-1286	152	41	gas	gas	NOUN
iogr-1286	152	42	content	content	NOUN
iogr-1286	152	43	of	of	ADP
iogr-1286	152	44	312.14	312.14	NUM
iogr-1286	152	45	scf	scf	PROPN
iogr-1286	152	46	/	/	SYM
iogr-1286	152	47	ton	ton	NOUN
iogr-1286	152	48	.	.	PUNCT
iogr-1286	153	1	the	the	DET
iogr-1286	153	2	coal	coal	NOUN
iogr-1286	153	3	in	in	ADP
iogr-1286	153	4	these	these	DET
iogr-1286	153	5	basins	basin	NOUN
iogr-1286	153	6	is	be	AUX
iogr-1286	153	7	classified	classify	VERB
iogr-1286	153	8	as	as	ADP
iogr-1286	153	9	sub	sub	ADJ
iogr-1286	153	10	-	-	ADJ
iogr-1286	153	11	bituminous	bituminous	ADJ
iogr-1286	153	12	,	,	PUNCT
iogr-1286	153	13	indicating	indicate	VERB
iogr-1286	153	14	a	a	DET
iogr-1286	153	15	lower	low	ADJ
iogr-1286	153	16	grade	grade	NOUN
iogr-1286	153	17	.	.	PUNCT
iogr-1286	154	1	the	the	DET
iogr-1286	154	2	average	average	ADJ
iogr-1286	154	3	moisture	moisture	NOUN
iogr-1286	154	4	content	content	NOUN
iogr-1286	154	5	across	across	ADP
iogr-1286	154	6	these	these	DET
iogr-1286	154	7	basins	basin	NOUN
iogr-1286	154	8	is	be	AUX
iogr-1286	154	9	10.95	10.95	NUM
iogr-1286	154	10	%	%	NOUN
iogr-1286	154	11	,	,	PUNCT
iogr-1286	154	12	which	which	PRON
iogr-1286	154	13	is	be	AUX
iogr-1286	154	14	comparable	comparable	ADJ
iogr-1286	154	15	to	to	ADP
iogr-1286	154	16	that	that	PRON
iogr-1286	154	17	of	of	ADP
iogr-1286	154	18	australian	australian	ADJ
iogr-1286	154	19	coal	coal	NOUN
iogr-1286	154	20	.	.	PUNCT
iogr-1286	155	1	among	among	ADP
iogr-1286	155	2	the	the	DET
iogr-1286	155	3	analyzed	analyze	VERB
iogr-1286	155	4	basins	basin	NOUN
iogr-1286	155	5	,	,	PUNCT
iogr-1286	155	6	the	the	DET
iogr-1286	155	7	onyeama	onyeama	NOUN
iogr-1286	155	8	coal	coal	NOUN
iogr-1286	155	9	field	field	NOUN
iogr-1286	155	10	is	be	AUX
iogr-1286	155	11	noted	note	VERB
iogr-1286	155	12	for	for	ADP
iogr-1286	155	13	its	its	PRON
iogr-1286	155	14	low	low	ADJ
iogr-1286	155	15	ash	ash	NOUN
iogr-1286	155	16	content	content	NOUN
iogr-1286	155	17	,	,	PUNCT
iogr-1286	155	18	whereas	whereas	SCONJ
iogr-1286	155	19	coal	coal	NOUN
iogr-1286	155	20	from	from	ADP
iogr-1286	155	21	india	india	PROPN
iogr-1286	155	22	shows	show	VERB
iogr-1286	155	23	higher	high	ADJ
iogr-1286	155	24	ash	ash	NOUN
iogr-1286	155	25	values	value	NOUN
iogr-1286	155	26	.	.	PUNCT
iogr-1286	156	1	the	the	DET
iogr-1286	156	2	nigerian	nigerian	ADJ
iogr-1286	156	3	coals	coal	NOUN
iogr-1286	156	4	are	be	AUX
iogr-1286	156	5	identified	identify	VERB
iogr-1286	156	6	as	as	ADP
iogr-1286	156	7	sub	sub	NOUN
iogr-1286	156	8	-	-	ADJ
iogr-1286	156	9	bituminous	bituminous	ADJ
iogr-1286	156	10	,	,	PUNCT
iogr-1286	156	11	with	with	ADP
iogr-1286	156	12	shallow	shallow	ADJ
iogr-1286	156	13	deposits	deposit	NOUN
iogr-1286	156	14	and	and	CCONJ
iogr-1286	156	15	relatively	relatively	ADV
iogr-1286	156	16	low	low	ADJ
iogr-1286	156	17	ash	ash	NOUN
iogr-1286	156	18	and	and	CCONJ
iogr-1286	156	19	moisture	moisture	NOUN
iogr-1286	156	20	contents	content	NOUN
iogr-1286	156	21	,	,	PUNCT
iogr-1286	156	22	making	make	VERB
iogr-1286	156	23	them	they	PRON
iogr-1286	156	24	well	well	ADV
iogr-1286	156	25	-	-	PUNCT
iogr-1286	156	26	suited	suit	VERB
iogr-1286	156	27	for	for	ADP
iogr-1286	156	28	open	open	ADJ
iogr-1286	156	29	-	-	PUNCT
iogr-1286	156	30	pit	pit	NOUN
iogr-1286	156	31	mining	mining	NOUN
iogr-1286	156	32	and	and	CCONJ
iogr-1286	156	33	combustion	combustion	NOUN
iogr-1286	156	34	.	.	PUNCT
iogr-1286	157	1	these	these	DET
iogr-1286	157	2	attributes	attribute	VERB
iogr-1286	157	3	underscore	underscore	VERB
iogr-1286	157	4	nigeria	nigeria	PROPN
iogr-1286	157	5	's	's	PART
iogr-1286	157	6	significant	significant	ADJ
iogr-1286	157	7	potential	potential	NOUN
iogr-1286	157	8	as	as	ADP
iogr-1286	157	9	a	a	DET
iogr-1286	157	10	cbm	cbm	PROPN
iogr-1286	157	11	producer	producer	NOUN
iogr-1286	157	12	.	.	PUNCT
iogr-1286	158	1	however	however	ADV
iogr-1286	158	2	,	,	PUNCT
iogr-1286	158	3	despite	despite	SCONJ
iogr-1286	158	4	the	the	DET
iogr-1286	158	5	promising	promising	ADJ
iogr-1286	158	6	characteristics	characteristic	NOUN
iogr-1286	158	7	,	,	PUNCT
iogr-1286	158	8	the	the	DET
iogr-1286	158	9	moderate	moderate	ADJ
iogr-1286	158	10	permeability	permeability	NOUN
iogr-1286	158	11	and	and	CCONJ
iogr-1286	158	12	lower	low	ADJ
iogr-1286	158	13	porosity	porosity	NOUN
iogr-1286	158	14	of	of	ADP
iogr-1286	158	15	the	the	DET
iogr-1286	158	16	cbm	cbm	PROPN
iogr-1286	158	17	reservoirs	reservoir	NOUN
iogr-1286	158	18	suggest	suggest	VERB
iogr-1286	158	19	that	that	SCONJ
iogr-1286	158	20	the	the	DET
iogr-1286	158	21	efficiency	efficiency	NOUN
iogr-1286	158	22	of	of	ADP
iogr-1286	158	23	methane	methane	NOUN
iogr-1286	158	24	extraction	extraction	NOUN
iogr-1286	158	25	will	will	AUX
iogr-1286	158	26	be	be	AUX
iogr-1286	158	27	influenced	influence	VERB
iogr-1286	158	28	by	by	ADP
iogr-1286	158	29	various	various	ADJ
iogr-1286	158	30	factors	factor	NOUN
iogr-1286	158	31	,	,	PUNCT
iogr-1286	158	32	including	include	VERB
iogr-1286	158	33	geological	geological	ADJ
iogr-1286	158	34	conditions	condition	NOUN
iogr-1286	158	35	,	,	PUNCT
iogr-1286	158	36	drilling	drilling	NOUN
iogr-1286	158	37	and	and	CCONJ
iogr-1286	158	38	completion	completion	NOUN
iogr-1286	158	39	methods	method	NOUN
iogr-1286	158	40	,	,	PUNCT
iogr-1286	158	41	and	and	CCONJ
iogr-1286	158	42	advancements	advancement	NOUN
iogr-1286	158	43	in	in	ADP
iogr-1286	158	44	extraction	extraction	NOUN
iogr-1286	158	45	technology	technology	NOUN
iogr-1286	158	46	.	.	PUNCT
iogr-1286	159	1	conflicting	conflict	VERB
iogr-1286	159	2	interests	interest	NOUN
iogr-1286	159	3	the	the	DET
iogr-1286	159	4	author(s	author(s	NOUN
iogr-1286	159	5	)	)	PUNCT
iogr-1286	159	6	declare	declare	VERB
iogr-1286	159	7	that	that	SCONJ
iogr-1286	159	8	they	they	PRON
iogr-1286	159	9	have	have	VERB
iogr-1286	159	10	no	no	DET
iogr-1286	159	11	conflicting	conflict	VERB
iogr-1286	159	12	interests	interest	NOUN
iogr-1286	159	13	.	.	PUNCT
iogr-1286	160	1	references	reference	NOUN
iogr-1286	160	2	adedosu	adedosu	VERB
iogr-1286	160	3	,	,	PUNCT
iogr-1286	160	4	t.	t.	PROPN
iogr-1286	160	5	a.	a.	PROPN
iogr-1286	160	6	,	,	PUNCT
iogr-1286	160	7	sonibare	sonibare	NOUN
iogr-1286	160	8	,	,	PUNCT
iogr-1286	160	9	o.	o.	PROPN
iogr-1286	160	10	o.	o.	PROPN
iogr-1286	160	11	,	,	PUNCT
iogr-1286	160	12	ekundayo	ekundayo	VERB
iogr-1286	160	13	,	,	PUNCT
iogr-1286	160	14	o.	o.	PROPN
iogr-1286	160	15	,	,	PUNCT
iogr-1286	160	16	et	et	PROPN
iogr-1286	160	17	al	al	PROPN
iogr-1286	160	18	.	.	PROPN
iogr-1286	160	19	2010	2010	NUM
iogr-1286	160	20	.	.	PUNCT
iogr-1286	161	1	hydrocarbon	hydrocarbon	NOUN
iogr-1286	161	2	-	-	PUNCT
iogr-1286	161	3	generative	generative	ADJ
iogr-1286	161	4	potential	potential	NOUN
iogr-1286	161	5	of	of	ADP
iogr-1286	161	6	coal	coal	NOUN
iogr-1286	161	7	and	and	CCONJ
iogr-1286	161	8	interbedded	interbedde	VERB
iogr-1286	161	9	shale	shale	NOUN
iogr-1286	161	10	of	of	ADP
iogr-1286	161	11	mamu	mamu	PROPN
iogr-1286	161	12	formation	formation	PROPN
iogr-1286	161	13	,	,	PUNCT
iogr-1286	161	14	benue	benue	VERB
iogr-1286	161	15	trough	trough	NOUN
iogr-1286	161	16	,	,	PUNCT
iogr-1286	161	17	nigeria	nigeria	PROPN
iogr-1286	161	18	.	.	PUNCT
iogr-1286	162	1	petroleum	petroleum	NOUN
iogr-1286	162	2	science	science	NOUN
iogr-1286	162	3	and	and	CCONJ
iogr-1286	162	4	technology	technology	NOUN
iogr-1286	162	5	28(4):412	28(4):412	NOUN
iogr-1286	162	6	-	-	SYM
iogr-1286	162	7	427	427	NUM
iogr-1286	162	8	.	.	PUNCT
iogr-1286	163	1	adedosu	adedosu	PROPN
iogr-1286	163	2	,	,	PUNCT
iogr-1286	163	3	t.a	t.a	PROPN
iogr-1286	163	4	.	.	PROPN
iogr-1286	163	5	,	,	PUNCT
iogr-1286	163	6	adedosu	adedosu	PROPN
iogr-1286	163	7	,	,	PUNCT
iogr-1286	163	8	h.o	h.o	PROPN
iogr-1286	163	9	.	.	PROPN
iogr-1286	163	10	,	,	PUNCT
iogr-1286	163	11	and	and	CCONJ
iogr-1286	163	12	adebiyi	adebiyi	NOUN
iogr-1286	163	13	,	,	PUNCT
iogr-1286	163	14	f.m	f.m	PROPN
iogr-1286	163	15	.	.	PROPN
iogr-1286	163	16	,	,	PUNCT
iogr-1286	163	17	2007	2007	NUM
iogr-1286	163	18	.	.	PUNCT
iogr-1286	164	1	geochemical	geochemical	ADJ
iogr-1286	164	2	and	and	CCONJ
iogr-1286	164	3	mineralogical	mineralogical	ADJ
iogr-1286	164	4	significance	significance	NOUN
iogr-1286	164	5	of	of	ADP
iogr-1286	164	6	trace	trace	NOUN
iogr-1286	164	7	metals	metal	NOUN
iogr-1286	164	8	in	in	ADP
iogr-1286	164	9	benue	benue	NOUN
iogr-1286	164	10	trough	trough	NOUN
iogr-1286	164	11	coals	coal	NOUN
iogr-1286	164	12	,	,	PUNCT
iogr-1286	164	13	nigeria	nigeria	PROPN
iogr-1286	164	14	.	.	PUNCT
iogr-1286	165	1	journal	journal	PROPN
iogr-1286	165	2	of	of	ADP
iogr-1286	165	3	applied	apply	VERB
iogr-1286	165	4	sciences	science	NOUN
iogr-1286	165	5	7(20	7(20	NUM
iogr-1286	165	6	):	):	PUNCT
iogr-1286	165	7	3101	3101	NUM
iogr-1286	165	8	-	-	SYM
iogr-1286	165	9	3105	3105	NUM
iogr-1286	165	10	.	.	PUNCT
iogr-1286	166	1	akinyemi	akinyemi	PROPN
iogr-1286	166	2	,	,	PUNCT
iogr-1286	166	3	s.a	s.a	PROPN
iogr-1286	166	4	.	.	PROPN
iogr-1286	166	5	,	,	PUNCT
iogr-1286	166	6	hower	hower	PROPN
iogr-1286	166	7	,	,	PUNCT
iogr-1286	166	8	j.c	j.c	PROPN
iogr-1286	166	9	.	.	PROPN
iogr-1286	166	10	,	,	PUNCT
iogr-1286	166	11	madukwe	madukwe	PROPN
iogr-1286	166	12	,	,	PUNCT
iogr-1286	166	13	h.y	h.y	PROPN
iogr-1286	166	14	.	.	PROPN
iogr-1286	166	15	,	,	PUNCT
iogr-1286	166	16	et	et	PROPN
iogr-1286	166	17	al	al	PROPN
iogr-1286	166	18	.	.	PROPN
iogr-1286	166	19	2022	2022	NUM
iogr-1286	166	20	.	.	PUNCT
iogr-1286	167	1	geochemical	geochemical	ADJ
iogr-1286	167	2	,	,	PUNCT
iogr-1286	167	3	mineralogical	mineralogical	ADJ
iogr-1286	167	4	,	,	PUNCT
iogr-1286	167	5	and	and	CCONJ
iogr-1286	167	6	petrological	petrological	ADJ
iogr-1286	167	7	characteristics	characteristic	NOUN
iogr-1286	167	8	of	of	ADP
iogr-1286	167	9	the	the	DET
iogr-1286	167	10	cretaceous	cretaceous	ADJ
iogr-1286	167	11	coal	coal	NOUN
iogr-1286	167	12	from	from	ADP
iogr-1286	167	13	the	the	DET
iogr-1286	167	14	middle	middle	PROPN
iogr-1286	167	15	benue	benue	PROPN
iogr-1286	167	16	trough	trough	PROPN
iogr-1286	167	17	basin	basin	NOUN
iogr-1286	167	18	,	,	PUNCT
iogr-1286	167	19	nigeria	nigeria	PRON
iogr-1286	167	20	:	:	PUNCT
iogr-1286	167	21	implication	implication	NOUN
iogr-1286	167	22	for	for	ADP
iogr-1286	167	23	coal	coal	NOUN
iogr-1286	167	24	depositional	depositional	ADJ
iogr-1286	167	25	environments	environment	NOUN
iogr-1286	167	26	.	.	PUNCT
iogr-1286	168	1	energy	energy	NOUN
iogr-1286	168	2	geoscience	geoscience	PROPN
iogr-1286	168	3	3(3	3(3	NUM
iogr-1286	168	4	):	):	PUNCT
iogr-1286	168	5	300	300	NUM
iogr-1286	168	6	-	-	SYM
iogr-1286	168	7	313	313	NUM
iogr-1286	168	8	.	.	PUNCT
iogr-1286	168	9	annual	annual	ADJ
iogr-1286	168	10	energy	energy	NOUN
iogr-1286	168	11	outlook	outlook	NOUN
iogr-1286	168	12	.	.	PUNCT
iogr-1286	169	1	2023	2023	NUM
iogr-1286	169	2	.	.	PUNCT
iogr-1286	170	1	energy	energy	NOUN
iogr-1286	170	2	information	information	PROPN
iogr-1286	170	3	administration	administration	NOUN
iogr-1286	170	4	.	.	PUNCT
iogr-1286	170	5	http://www.eia.gov/forecasts/aeo/er/index.cfm	http://www.eia.gov/forecasts/aeo/er/index.cfm	PUNCT
iogr-1286	171	1	(	(	PUNCT
iogr-1286	171	2	accessed	access	VERB
iogr-1286	171	3	july	july	PROPN
iogr-1286	171	4	24	24	NUM
iogr-1286	171	5	2023	2023	NUM
iogr-1286	171	6	)	)	PUNCT
iogr-1286	171	7	.	.	PUNCT
iogr-1286	172	1	barka	barka	PROPN
iogr-1286	172	2	,	,	PUNCT
iogr-1286	172	3	j.	j.	PROPN
iogr-1286	172	4	and	and	CCONJ
iogr-1286	172	5	nur	nur	PROPN
iogr-1286	172	6	,	,	PUNCT
iogr-1286	172	7	a.	a.	NOUN
iogr-1286	172	8	2023	2023	NUM
iogr-1286	172	9	.	.	PUNCT
iogr-1286	173	1	geothermal	geothermal	ADJ
iogr-1286	173	2	prospective	prospective	ADJ
iogr-1286	173	3	areas	area	NOUN
iogr-1286	173	4	in	in	ADP
iogr-1286	173	5	the	the	DET
iogr-1286	173	6	northern	northern	ADJ
iogr-1286	173	7	sector	sector	NOUN
iogr-1286	173	8	of	of	ADP
iogr-1286	173	9	bida	bida	PROPN
iogr-1286	173	10	basin	basin	PROPN
iogr-1286	173	11	and	and	CCONJ
iogr-1286	173	12	environs	environ	NOUN
iogr-1286	173	13	,	,	PUNCT
iogr-1286	173	14	northcentral	northcentral	PROPN
iogr-1286	173	15	nigeria	nigeria	PROPN
iogr-1286	173	16	.	.	PUNCT
iogr-1286	174	1	science	science	PROPN
iogr-1286	174	2	world	world	PROPN
iogr-1286	174	3	journal	journal	PROPN
iogr-1286	174	4	18(3	18(3	NUM
iogr-1286	174	5	):	):	PUNCT
iogr-1286	174	6	509	509	NUM
iogr-1286	174	7	-	-	SYM
iogr-1286	174	8	518	518	NUM
iogr-1286	174	9	.	.	PUNCT
iogr-1286	175	1	chew	chew	VERB
iogr-1286	175	2	,	,	PUNCT
iogr-1286	175	3	k.	k.	PROPN
iogr-1286	175	4	j.	j.	PROPN
iogr-1286	175	5	2013	2013	NUM
iogr-1286	175	6	.	.	PUNCT
iogr-1286	176	1	the	the	DET
iogr-1286	176	2	future	future	NOUN
iogr-1286	176	3	of	of	ADP
iogr-1286	176	4	oil	oil	NOUN
iogr-1286	176	5	:	:	PUNCT
iogr-1286	176	6	unconventional	unconventional	ADJ
iogr-1286	176	7	fossil	fossil	ADJ
iogr-1286	176	8	fuels	fuel	NOUN
iogr-1286	176	9	.	.	PUNCT
iogr-1286	177	1	philosophical	philosophical	ADJ
iogr-1286	177	2	transactions	transaction	NOUN
iogr-1286	177	3	of	of	ADP
iogr-1286	177	4	the	the	DET
iogr-1286	177	5	royal	royal	ADJ
iogr-1286	177	6	society	society	NOUN
iogr-1286	177	7	a	a	DET
iogr-1286	177	8	:	:	PUNCT
iogr-1286	177	9	mathematical	mathematical	ADJ
iogr-1286	177	10	,	,	PUNCT
iogr-1286	177	11	physical	physical	ADJ
iogr-1286	177	12	and	and	CCONJ
iogr-1286	177	13	engineering	engineering	NOUN
iogr-1286	177	14	sciences	science	NOUN
iogr-1286	177	15	372(2006):1	372(2006):1	NUM
iogr-1286	177	16	-	-	SYM
iogr-1286	177	17	12	12	NUM
iogr-1286	177	18	.	.	PUNCT
iogr-1286	178	1	cho	cho	PROPN
iogr-1286	178	2	,	,	PUNCT
iogr-1286	178	3	d.	d.	PROPN
iogr-1286	178	4	,	,	PUNCT
iogr-1286	178	5	song	song	PROPN
iogr-1286	178	6	,	,	PUNCT
iogr-1286	178	7	h.	h.	PROPN
iogr-1286	178	8	,	,	PUNCT
iogr-1286	178	9	yoon	yoon	PROPN
iogr-1286	178	10	,	,	PUNCT
iogr-1286	178	11	k.	k.	PROPN
iogr-1286	178	12	h.	h.	PROPN
iogr-1286	178	13	,	,	PUNCT
iogr-1286	178	14	et	et	PROPN
iogr-1286	178	15	al	al	PROPN
iogr-1286	178	16	.	.	PROPN
iogr-1286	178	17	2016	2016	NUM
iogr-1286	178	18	.	.	PUNCT
iogr-1286	179	1	treatment	treatment	NOUN
iogr-1286	179	2	of	of	ADP
iogr-1286	179	3	simulated	simulated	ADJ
iogr-1286	179	4	coalbed	coalbe	VERB
iogr-1286	179	5	methane	methane	NOUN
iogr-1286	179	6	produced	produce	VERB
iogr-1286	179	7	water	water	NOUN
iogr-1286	179	8	using	use	VERB
iogr-1286	179	9	direct	direct	ADJ
iogr-1286	179	10	contact	contact	NOUN
iogr-1286	179	11	membrane	membrane	NOUN
iogr-1286	179	12	distillation.water	distillation.water	PROPN
iogr-1286	179	13	8(5	8(5	NUM
iogr-1286	179	14	):	):	PUNCT
iogr-1286	179	15	194	194	NUM
iogr-1286	179	16	.	.	PUNCT
iogr-1286	180	1	coal	coal	NOUN
iogr-1286	180	2	and	and	CCONJ
iogr-1286	180	3	electricity	electricity	NOUN
iogr-1286	180	4	generation	generation	NOUN
iogr-1286	180	5	.	.	PUNCT
iogr-1286	181	1	2012	2012	NUM
iogr-1286	181	2	.	.	PUNCT
iogr-1286	182	1	world	world	PROPN
iogr-1286	182	2	coal	coal	PROPN
iogr-1286	182	3	association	association	PROPN
iogr-1286	182	4	.	.	PUNCT
iogr-1286	183	1	http://www.worldcoal.org/resources/wca-publications	http://www.worldcoal.org/resources/wca-publication	NOUN
iogr-1286	183	2	(	(	PUNCT
iogr-1286	183	3	accessed	access	VERB
iogr-1286	183	4	24	24	NUM
iogr-1286	183	5	december	december	PROPN
iogr-1286	183	6	2022	2022	NUM
iogr-1286	183	7	)	)	PUNCT
iogr-1286	183	8	.	.	PUNCT
iogr-1286	184	1	coal	coal	NOUN
iogr-1286	184	2	.	.	PUNCT
iogr-1286	185	1	2022	2022	NUM
iogr-1286	185	2	.	.	PUNCT
iogr-1286	186	1	energy	energy	NOUN
iogr-1286	186	2	information	information	PROPN
iogr-1286	186	3	administration	administration	NOUN
iogr-1286	186	4	.	.	PUNCT
iogr-1286	187	1	https://www.eia.gov/energyexplained/coal/	https://www.eia.gov/energyexplained/coal/	PROPN
iogr-1286	187	2	(	(	PUNCT
iogr-1286	187	3	accessed	access	VERB
iogr-1286	187	4	december	december	PROPN
iogr-1286	187	5	24	24	NUM
iogr-1286	187	6	2022	2022	NUM
iogr-1286	187	7	)	)	PUNCT
iogr-1286	187	8	.	.	PUNCT
iogr-1286	188	1	fatoye	fatoye	PROPN
iogr-1286	188	2	,	,	PUNCT
iogr-1286	188	3	f.	f.	PROPN
iogr-1286	188	4	b.	b.	PROPN
iogr-1286	188	5	,	,	PUNCT
iogr-1286	188	6	omada	omada	PROPN
iogr-1286	188	7	,	,	PUNCT
iogr-1286	188	8	a.	a.	PROPN
iogr-1286	188	9	j.	j.	PROPN
iogr-1286	188	10	i.	i.	PROPN
iogr-1286	188	11	,	,	PUNCT
iogr-1286	188	12	and	and	CCONJ
iogr-1286	188	13	olatunji	olatunji	PROPN
iogr-1286	188	14	,	,	PUNCT
iogr-1286	188	15	j.	j.	PROPN
iogr-1286	188	16	a.	a.	PROPN
iogr-1286	188	17	2012	2012	NUM
iogr-1286	188	18	.	.	PUNCT
iogr-1286	189	1	quality	quality	NOUN
iogr-1286	189	2	assessments	assessment	NOUN
iogr-1286	189	3	and	and	CCONJ
iogr-1286	189	4	industrial	industrial	ADJ
iogr-1286	189	5	usages	usage	NOUN
iogr-1286	189	6	of	of	ADP
iogr-1286	189	7	cretaceous	cretaceous	ADJ
iogr-1286	189	8	okaba	okaba	ADJ
iogr-1286	189	9	coal	coal	NOUN
iogr-1286	189	10	,	,	PUNCT
iogr-1286	189	11	anambra	anambra	PROPN
iogr-1286	189	12	basin	basin	PROPN
iogr-1286	189	13	,	,	PUNCT
iogr-1286	189	14	nigeria	nigeria	PROPN
iogr-1286	189	15	.	.	PUNCT
iogr-1286	190	1	journal	journal	PROPN
iogr-1286	190	2	of	of	ADP
iogr-1286	190	3	mining	mining	NOUN
iogr-1286	190	4	and	and	CCONJ
iogr-1286	190	5	geology	geology	NOUN
iogr-1286	190	6	48(1	48(1	NOUN
iogr-1286	190	7	):	):	PUNCT
iogr-1286	190	8	81	81	NUM
iogr-1286	190	9	-	-	SYM
iogr-1286	190	10	87	87	NUM
iogr-1286	190	11	.	.	PUNCT
iogr-1286	191	1	greb	greb	PROPN
iogr-1286	191	2	,	,	PUNCT
iogr-1286	191	3	s.	s.	PROPN
iogr-1286	191	4	f.	f.	PROPN
iogr-1286	191	5	,	,	PUNCT
iogr-1286	191	6	eble	eble	ADJ
iogr-1286	191	7	,	,	PUNCT
iogr-1286	191	8	c.	c.	PROPN
iogr-1286	191	9	f.	f.	PROPN
iogr-1286	191	10	,	,	PUNCT
iogr-1286	191	11	and	and	CCONJ
iogr-1286	191	12	hower	hower	NOUN
iogr-1286	191	13	,	,	PUNCT
iogr-1286	191	14	j.	j.	PROPN
iogr-1286	191	15	c.	c.	PROPN
iogr-1286	191	16	2017	2017	NUM
iogr-1286	191	17	.	.	PUNCT
iogr-1286	192	1	coal	coal	NOUN
iogr-1286	192	2	.	.	PUNCT
iogr-1286	193	1	encyclopedia	encyclopedia	NOUN
iogr-1286	193	2	of	of	ADP
iogr-1286	193	3	earth	earth	PROPN
iogr-1286	193	4	sciences	sciences	PROPN
iogr-1286	193	5	series	series	PROPN
iogr-1286	193	6	15(3):1	15(3):1	PROPN
iogr-1286	193	7	-	-	SYM
iogr-1286	193	8	16	16	NUM
iogr-1286	193	9	.	.	PUNCT
iogr-1286	194	1	green	green	PROPN
iogr-1286	194	2	,	,	PUNCT
iogr-1286	194	3	i.	i.	PROPN
iogr-1286	194	4	a.	a.	PROPN
iogr-1286	194	5	,	,	PUNCT
iogr-1286	194	6	ugoji	ugoji	PROPN
iogr-1286	194	7	,	,	PUNCT
iogr-1286	194	8	k.	k.	PROPN
iogr-1286	194	9	u.	u.	PROPN
iogr-1286	194	10	,	,	PUNCT
iogr-1286	194	11	and	and	CCONJ
iogr-1286	194	12	igbere	igbere	ADV
iogr-1286	194	13	,	,	PUNCT
iogr-1286	194	14	b.	b.	PROPN
iogr-1286	194	15	n.	n.	PROPN
iogr-1286	194	16	2019	2019	NUM
iogr-1286	194	17	.	.	PUNCT
iogr-1286	195	1	economic	economic	ADJ
iogr-1286	195	2	analysis	analysis	NOUN
iogr-1286	195	3	of	of	ADP
iogr-1286	195	4	natural	natural	ADJ
iogr-1286	195	5	gas	gas	NOUN
iogr-1286	195	6	reserves	reserve	NOUN
iogr-1286	195	7	addition	addition	NOUN
iogr-1286	195	8	from	from	ADP
iogr-1286	195	9	coal	coal	NOUN
iogr-1286	195	10	bed	bed	NOUN
iogr-1286	195	11	methane	methane	NOUN
iogr-1286	195	12	in	in	ADP
iogr-1286	195	13	nigeria	nigeria	PROPN
iogr-1286	195	14	.	.	PUNCT
iogr-1286	196	1	european	european	PROPN
iogr-1286	196	2	journal	journal	PROPN
iogr-1286	196	3	of	of	ADP
iogr-1286	196	4	engineering	engineering	NOUN
iogr-1286	196	5	and	and	CCONJ
iogr-1286	196	6	technology	technology	NOUN
iogr-1286	196	7	research	research	NOUN
iogr-1286	196	8	4(4	4(4	NUM
iogr-1286	196	9	):	):	PUNCT
iogr-1286	196	10	31	31	NUM
iogr-1286	196	11	-	-	SYM
iogr-1286	196	12	34	34	NUM
iogr-1286	196	13	.	.	PUNCT
iogr-1286	197	1	hamawand	hamawand	NOUN
iogr-1286	197	2	,	,	PUNCT
iogr-1286	197	3	i.	i.	PROPN
iogr-1286	197	4	,	,	PUNCT
iogr-1286	197	5	yusaf	yusaf	PROPN
iogr-1286	197	6	,	,	PUNCT
iogr-1286	197	7	t.	t.	PROPN
iogr-1286	197	8	,	,	PUNCT
iogr-1286	197	9	and	and	CCONJ
iogr-1286	197	10	hamawand	hamawand	NOUN
iogr-1286	197	11	,	,	PUNCT
iogr-1286	197	12	s.	s.	PROPN
iogr-1286	197	13	g.	g.	PROPN
iogr-1286	197	14	2013	2013	NUM
iogr-1286	197	15	.	.	PUNCT
iogr-1286	198	1	coal	coal	NOUN
iogr-1286	198	2	seam	seam	NOUN
iogr-1286	198	3	gas	gas	NOUN
iogr-1286	198	4	and	and	CCONJ
iogr-1286	198	5	associated	associated	ADJ
iogr-1286	198	6	water	water	NOUN
iogr-1286	198	7	:	:	PUNCT
iogr-1286	198	8	a	a	DET
iogr-1286	198	9	review	review	NOUN
iogr-1286	198	10	paper	paper	NOUN
iogr-1286	198	11	.	.	PUNCT
iogr-1286	199	1	renewable	renewable	ADJ
iogr-1286	199	2	and	and	CCONJ
iogr-1286	199	3	sustainable	sustainable	ADJ
iogr-1286	199	4	energy	energy	NOUN
iogr-1286	199	5	reviews	review	NOUN
iogr-1286	199	6	22	22	NUM
iogr-1286	199	7	:	:	PUNCT
iogr-1286	199	8	550	550	NUM
iogr-1286	199	9	-	-	SYM
iogr-1286	199	10	560	560	NUM
iogr-1286	199	11	.	.	PUNCT
iogr-1286	200	1	liu	liu	PROPN
iogr-1286	200	2	,	,	PUNCT
iogr-1286	200	3	g.	g.	PROPN
iogr-1286	200	4	,	,	PUNCT
iogr-1286	200	5	li	li	PROPN
iogr-1286	200	6	,	,	PUNCT
iogr-1286	200	7	b.	b.	PROPN
iogr-1286	200	8	,	,	PUNCT
iogr-1286	200	9	zhang	zhang	PROPN
iogr-1286	200	10	,	,	PUNCT
iogr-1286	200	11	z.	z.	PROPN
iogr-1286	200	12	,	,	PUNCT
iogr-1286	200	13	et	et	PROPN
iogr-1286	200	14	al	al	PROPN
iogr-1286	200	15	.	.	PROPN
iogr-1286	200	16	2023	2023	NUM
iogr-1286	200	17	.	.	PUNCT
iogr-1286	201	1	effects	effect	NOUN
iogr-1286	201	2	of	of	ADP
iogr-1286	201	3	liquid	liquid	ADJ
iogr-1286	201	4	co2	co2	NOUN
iogr-1286	201	5	phase	phase	NOUN
iogr-1286	201	6	transition	transition	NOUN
iogr-1286	201	7	fracturing	fracturing	NOUN
iogr-1286	201	8	on	on	ADP
iogr-1286	201	9	methane	methane	NOUN
iogr-1286	201	10	adsorption	adsorption	NOUN
iogr-1286	201	11	of	of	ADP
iogr-1286	201	12	coal	coal	NOUN
iogr-1286	201	13	.	.	PUNCT
iogr-1286	202	1	energy	energy	NOUN
iogr-1286	202	2	and	and	CCONJ
iogr-1286	202	3	fuels	fuel	NOUN
iogr-1286	202	4	37(3):1949	37(3):1949	NUM
iogr-1286	202	5	-	-	SYM
iogr-1286	202	6	1961	1961	NUM
iogr-1286	202	7	.	.	PUNCT
iogr-1286	203	1	https://www.eia.gov/energyexplained/coal/	https://www.eia.gov/energyexplained/coal/	PRON
iogr-1286	203	2	improved	improve	VERB
iogr-1286	203	3	oil	oil	NOUN
iogr-1286	203	4	and	and	CCONJ
iogr-1286	203	5	gas	gas	NOUN
iogr-1286	203	6	recovery	recovery	NOUN
iogr-1286	203	7	10	10	NUM
iogr-1286	203	8	lu	lu	PROPN
iogr-1286	203	9	,	,	PUNCT
iogr-1286	203	10	y.	y.	PROPN
iogr-1286	203	11	,	,	PUNCT
iogr-1286	203	12	zhang	zhang	PROPN
iogr-1286	203	13	,	,	PUNCT
iogr-1286	203	14	h.	h.	PROPN
iogr-1286	203	15	d.	d.	PROPN
iogr-1286	203	16	,	,	PUNCT
iogr-1286	203	17	zhou	zhou	PROPN
iogr-1286	203	18	,	,	PUNCT
iogr-1286	203	19	z.	z.	PROPN
iogr-1286	203	20	,	,	PUNCT
iogr-1286	203	21	et	et	PROPN
iogr-1286	203	22	al	al	PROPN
iogr-1286	203	23	.	.	PROPN
iogr-1286	203	24	2021	2021	NUM
iogr-1286	203	25	.	.	PUNCT
iogr-1286	204	1	current	current	ADJ
iogr-1286	204	2	status	status	NOUN
iogr-1286	204	3	and	and	CCONJ
iogr-1286	204	4	effective	effective	ADJ
iogr-1286	204	5	suggestions	suggestion	NOUN
iogr-1286	204	6	for	for	ADP
iogr-1286	204	7	efficient	efficient	ADJ
iogr-1286	204	8	exploitation	exploitation	NOUN
iogr-1286	204	9	of	of	ADP
iogr-1286	204	10	coalbed	coalbe	VERB
iogr-1286	204	11	methane	methane	NOUN
iogr-1286	204	12	in	in	ADP
iogr-1286	204	13	china	china	PROPN
iogr-1286	204	14	:	:	PUNCT
iogr-1286	204	15	a	a	DET
iogr-1286	204	16	review	review	NOUN
iogr-1286	204	17	.	.	PUNCT
iogr-1286	205	1	energy	energy	NOUN
iogr-1286	205	2	and	and	CCONJ
iogr-1286	205	3	fuels	fuel	NOUN
iogr-1286	205	4	35(11):9102	35(11):9102	NUM
iogr-1286	205	5	-	-	SYM
iogr-1286	205	6	9123	9123	NUM
iogr-1286	205	7	.	.	PUNCT
iogr-1286	206	1	martin	martin	PROPN
iogr-1286	206	2	,	,	PUNCT
iogr-1286	206	3	a.	a.	PROPN
iogr-1286	206	4	,	,	PUNCT
iogr-1286	206	5	wahab	wahab	PROPN
iogr-1286	206	6	,	,	PUNCT
iogr-1286	206	7	h.	h.	PROPN
iogr-1286	206	8	,	,	PUNCT
iogr-1286	206	9	and	and	CCONJ
iogr-1286	206	10	barbarosa	barbarosa	PROPN
iogr-1286	206	11	,	,	PUNCT
iogr-1286	206	12	m.	m.	NOUN
iogr-1286	206	13	2021	2021	NUM
iogr-1286	206	14	)	)	PUNCT
iogr-1286	206	15	coalbed	coalbe	VERB
iogr-1286	206	16	methane	methane	NOUN
iogr-1286	206	17	as	as	ADP
iogr-1286	206	18	a	a	DET
iogr-1286	206	19	new	new	ADJ
iogr-1286	206	20	source	source	NOUN
iogr-1286	206	21	of	of	ADP
iogr-1286	206	22	energy	energy	NOUN
iogr-1286	206	23	in	in	ADP
iogr-1286	206	24	indonesia	indonesia	PROPN
iogr-1286	206	25	and	and	CCONJ
iogr-1286	206	26	some	some	DET
iogr-1286	206	27	developed	develop	VERB
iogr-1286	206	28	countries	country	NOUN
iogr-1286	206	29	-	-	PUNCT
iogr-1286	206	30	a	a	DET
iogr-1286	206	31	review	review	NOUN
iogr-1286	206	32	.	.	PUNCT
iogr-1286	207	1	journal	journal	PROPN
iogr-1286	207	2	of	of	ADP
iogr-1286	207	3	ocean	ocean	NOUN
iogr-1286	207	4	,	,	PUNCT
iogr-1286	207	5	mechanical	mechanical	ADJ
iogr-1286	207	6	and	and	CCONJ
iogr-1286	207	7	aerospace	aerospace	NOUN
iogr-1286	207	8	65(2):40	65(2):40	PROPN
iogr-1286	207	9	-	-	PUNCT
iogr-1286	207	10	60	60	NUM
iogr-1286	207	11	.	.	PUNCT
iogr-1286	208	1	mastalerz	mastalerz	NOUN
iogr-1286	208	2	,	,	PUNCT
iogr-1286	208	3	m.	m.	NOUN
iogr-1286	208	4	2014	2014	NUM
iogr-1286	208	5	.	.	PUNCT
iogr-1286	209	1	coalbed	coalbe	VERB
iogr-1286	209	2	methane	methane	NOUN
iogr-1286	209	3	:	:	PUNCT
iogr-1286	209	4	reserves	reserve	NOUN
iogr-1286	209	5	,	,	PUNCT
iogr-1286	209	6	production	production	NOUN
iogr-1286	209	7	and	and	CCONJ
iogr-1286	209	8	future	future	ADJ
iogr-1286	209	9	outlook	outlook	NOUN
iogr-1286	209	10	.	.	PUNCT
iogr-1286	210	1	in	in	ADP
iogr-1286	210	2	future	future	ADJ
iogr-1286	210	3	energy	energy	NOUN
iogr-1286	210	4	-	-	PUNCT
iogr-1286	210	5	improved	improve	VERB
iogr-1286	210	6	,	,	PUNCT
iogr-1286	210	7	sustainable	sustainable	ADJ
iogr-1286	210	8	and	and	CCONJ
iogr-1286	210	9	clean	clean	ADJ
iogr-1286	210	10	options	option	NOUN
iogr-1286	210	11	for	for	ADP
iogr-1286	210	12	our	our	PRON
iogr-1286	210	13	planet	planet	NOUN
iogr-1286	210	14	,	,	PUNCT
iogr-1286	210	15	ed	ed	NOUN
iogr-1286	210	16	by	by	ADP
iogr-1286	210	17	letcher	letcher	PROPN
iogr-1286	210	18	,	,	PUNCT
iogr-1286	210	19	t.m	t.m	PROPN
iogr-1286	210	20	.	.	PROPN
iogr-1286	210	21	,	,	PUNCT
iogr-1286	210	22	chap	chap	NOUN
iogr-1286	210	23	7	7	NUM
iogr-1286	210	24	,	,	PUNCT
iogr-1286	210	25	145	145	NUM
iogr-1286	210	26	-	-	SYM
iogr-1286	210	27	158	158	NUM
iogr-1286	210	28	.	.	PUNCT
iogr-1286	211	1	bloomington	bloomington	PROPN
iogr-1286	211	2	,	,	PUNCT
iogr-1286	211	3	in	in	ADP
iogr-1286	211	4	,	,	PUNCT
iogr-1286	211	5	usa	usa	PROPN
iogr-1286	211	6	:	:	PUNCT
iogr-1286	211	7	indiana	indiana	PROPN
iogr-1286	211	8	university	university	PROPN
iogr-1286	211	9	.	.	PUNCT
iogr-1286	212	1	nigerian	nigerian	ADJ
iogr-1286	212	2	coal	coal	NOUN
iogr-1286	212	3	corporation	corporation	NOUN
iogr-1286	212	4	.	.	PUNCT
iogr-1286	213	1	2006	2006	NUM
iogr-1286	213	2	.	.	PUNCT
iogr-1286	214	1	bureau	bureau	NOUN
iogr-1286	214	2	of	of	ADP
iogr-1286	214	3	public	public	ADJ
iogr-1286	214	4	enterprises	enterprise	NOUN
iogr-1286	214	5	.	.	PUNCT
iogr-1286	215	1	https://www.bpe.gov.ng/nigerian-coalcorporation/(accessed	https://www.bpe.gov.ng/nigerian-coalcorporation/(accesse	VERB
iogr-1286	215	2	20	20	NUM
iogr-1286	215	3	april	april	PROPN
iogr-1286	215	4	2022	2022	NUM
iogr-1286	215	5	)	)	PUNCT
iogr-1286	215	6	.	.	PUNCT
iogr-1286	216	1	oboirien	oboirien	PROPN
iogr-1286	216	2	,	,	PUNCT
iogr-1286	216	3	b.	b.	PROPN
iogr-1286	216	4	,	,	PUNCT
iogr-1286	216	5	north	north	PROPN
iogr-1286	216	6	,	,	PUNCT
iogr-1286	216	7	b.	b.	PROPN
iogr-1286	216	8	,	,	PUNCT
iogr-1286	216	9	obayopo	obayopo	PROPN
iogr-1286	216	10	,	,	PUNCT
iogr-1286	216	11	s.	s.	PROPN
iogr-1286	216	12	,	,	PUNCT
iogr-1286	216	13	et	et	PROPN
iogr-1286	216	14	al	al	PROPN
iogr-1286	216	15	.	.	PROPN
iogr-1286	216	16	2018	2018	NUM
iogr-1286	216	17	.	.	PUNCT
iogr-1286	217	1	analysis	analysis	NOUN
iogr-1286	217	2	of	of	ADP
iogr-1286	217	3	clean	clean	ADJ
iogr-1286	217	4	coal	coal	NOUN
iogr-1286	217	5	technology	technology	NOUN
iogr-1286	217	6	in	in	ADP
iogr-1286	217	7	nigeria	nigeria	PROPN
iogr-1286	217	8	for	for	ADP
iogr-1286	217	9	energy	energy	NOUN
iogr-1286	217	10	generation	generation	NOUN
iogr-1286	217	11	.	.	PUNCT
iogr-1286	218	1	energy	energy	NOUN
iogr-1286	218	2	strategy	strategy	NOUN
iogr-1286	218	3	reviews	review	NOUN
iogr-1286	218	4	20	20	NUM
iogr-1286	218	5	:	:	SYM
iogr-1286	218	6	64	64	NUM
iogr-1286	218	7	-	-	SYM
iogr-1286	218	8	70	70	NUM
iogr-1286	218	9	.	.	PUNCT
iogr-1286	219	1	olaleye	olaleye	PROPN
iogr-1286	219	2	,	,	PUNCT
iogr-1286	219	3	b.	b.	PROPN
iogr-1286	219	4	m.	m.	PROPN
iogr-1286	219	5	,	,	PUNCT
iogr-1286	219	6	onyemaobi	onyemaobi	NOUN
iogr-1286	219	7	,	,	PUNCT
iogr-1286	219	8	o.	o.	PROPN
iogr-1286	219	9	o.	o.	PROPN
iogr-1286	219	10	,	,	PUNCT
iogr-1286	219	11	and	and	CCONJ
iogr-1286	219	12	akande	akande	PROPN
iogr-1286	219	13	,	,	PUNCT
iogr-1286	219	14	j.	j.	PROPN
iogr-1286	219	15	m.	m.	PROPN
iogr-1286	219	16	2009	2009	NUM
iogr-1286	219	17	.	.	PUNCT
iogr-1286	220	1	permeability	permeability	NOUN
iogr-1286	220	2	characteristics	characteristic	NOUN
iogr-1286	220	3	and	and	CCONJ
iogr-1286	220	4	classification	classification	NOUN
iogr-1286	220	5	of	of	ADP
iogr-1286	220	6	coal	coal	NOUN
iogr-1286	220	7	seams	seam	NOUN
iogr-1286	220	8	in	in	ADP
iogr-1286	220	9	nigeria	nigeria	PROPN
iogr-1286	220	10	.	.	PUNCT
iogr-1286	221	1	advanced	advanced	ADJ
iogr-1286	221	2	materials	material	NOUN
iogr-1286	221	3	research	research	NOUN
iogr-1286	221	4	62:357	62:357	NUM
iogr-1286	221	5	-	-	SYM
iogr-1286	221	6	367	367	NUM
iogr-1286	221	7	.	.	PUNCT
iogr-1286	222	1	ozbayoglu	ozbayoglu	NOUN
iogr-1286	222	2	,	,	PUNCT
iogr-1286	222	3	g.	g.	PROPN
iogr-1286	222	4	2018	2018	NUM
iogr-1286	222	5	.	.	PUNCT
iogr-1286	223	1	energy	energy	NOUN
iogr-1286	223	2	production	production	NOUN
iogr-1286	223	3	from	from	ADP
iogr-1286	223	4	coal	coal	NOUN
iogr-1286	223	5	.	.	PUNCT
iogr-1286	224	1	comprehensive	comprehensive	ADJ
iogr-1286	224	2	energy	energy	NOUN
iogr-1286	224	3	systems	system	NOUN
iogr-1286	224	4	20(2	20(2	NOUN
iogr-1286	224	5	):	):	PUNCT
iogr-1286	224	6	788	788	NUM
iogr-1286	224	7	-	-	SYM
iogr-1286	224	8	821	821	NUM
iogr-1286	224	9	.	.	PUNCT
iogr-1286	225	1	proximate	proximate	NOUN
iogr-1286	225	2	and	and	CCONJ
iogr-1286	225	3	ultimate	ultimate	ADJ
iogr-1286	225	4	analysis	analysis	NOUN
iogr-1286	225	5	.	.	PUNCT
iogr-1286	226	1	2022	2022	NUM
iogr-1286	226	2	.	.	PUNCT
iogr-1286	227	1	sgs	sgs	PROPN
iogr-1286	227	2	corp	corp	PROPN
iogr-1286	227	3	.	.	PROPN
iogr-1286	227	4	https:///en	https:///en	PROPN
iogr-1286	227	5	-	-	PUNCT
iogr-1286	227	6	us	us	PROPN
iogr-1286	227	7	/	/	SYM
iogr-1286	227	8	services	service	NOUN
iogr-1286	227	9	/	/	SYM
iogr-1286	227	10	proximate	proximate	VERB
iogr-1286	227	11	-	-	PUNCT
iogr-1286	227	12	and	and	CCONJ
iogr-1286	227	13	-	-	PUNCT
iogr-1286	227	14	ultimate	ultimate	ADJ
iogr-1286	227	15	-	-	PUNCT
iogr-1286	227	16	analysis	analysis	NOUN
iogr-1286	227	17	(	(	PUNCT
iogr-1286	227	18	accessed	access	VERB
iogr-1286	227	19	24	24	NUM
iogr-1286	227	20	december	december	PROPN
iogr-1286	227	21	2022	2022	NUM
iogr-1286	227	22	)	)	PUNCT
iogr-1286	227	23	.	.	PUNCT
iogr-1286	228	1	qin	qin	PROPN
iogr-1286	228	2	,	,	PUNCT
iogr-1286	228	3	y.	y.	NOUN
iogr-1286	228	4	2006	2006	NUM
iogr-1286	228	5	,	,	PUNCT
iogr-1286	228	6	situation	situation	NOUN
iogr-1286	228	7	and	and	CCONJ
iogr-1286	228	8	challenges	challenge	NOUN
iogr-1286	228	9	of	of	ADP
iogr-1286	228	10	china	china	PROPN
iogr-1286	228	11	's	's	PART
iogr-1286	228	12	cbm	cbm	PROPN
iogr-1286	228	13	exploration	exploration	NOUN
iogr-1286	228	14	(	(	PUNCT
iogr-1286	228	15	i	i	NOUN
iogr-1286	228	16	):	):	PUNCT
iogr-1286	228	17	current	current	ADJ
iogr-1286	228	18	stage	stage	NOUN
iogr-1286	228	19	of	of	ADP
iogr-1286	228	20	development	development	NOUN
iogr-1286	228	21	:	:	PUNCT
iogr-1286	228	22	natural	natural	ADJ
iogr-1286	228	23	gas	gas	NOUN
iogr-1286	228	24	industry	industry	NOUN
iogr-1286	228	25	26(1	26(1	NUM
iogr-1286	228	26	):	):	PUNCT
iogr-1286	228	27	4	4	NUM
iogr-1286	228	28	-	-	SYM
iogr-1286	228	29	7	7	NUM
iogr-1286	228	30	(	(	PUNCT
iogr-1286	228	31	in	in	ADP
iogr-1286	228	32	chinese	chinese	PROPN
iogr-1286	228	33	)	)	PUNCT
iogr-1286	228	34	.	.	PUNCT
iogr-1286	229	1	ritchie	ritchie	PROPN
iogr-1286	229	2	,	,	PUNCT
iogr-1286	229	3	h.	h.	PROPN
iogr-1286	229	4	,	,	PUNCT
iogr-1286	229	5	rosado	rosado	NOUN
iogr-1286	229	6	,	,	PUNCT
iogr-1286	229	7	p.	p.	NOUN
iogr-1286	229	8	,	,	PUNCT
iogr-1286	229	9	and	and	CCONJ
iogr-1286	229	10	roser	roser	PROPN
iogr-1286	229	11	,	,	PUNCT
iogr-1286	229	12	m.	m.	NOUN
iogr-1286	229	13	2020	2020	NUM
iogr-1286	229	14	.	.	PUNCT
iogr-1286	230	1	energy	energy	NOUN
iogr-1286	230	2	.	.	PUNCT
iogr-1286	231	1	https://ourworldindata.org/energy	https://ourworldindata.org/energy	X
iogr-1286	232	1	(	(	PUNCT
iogr-1286	232	2	accessed	access	VERB
iogr-1286	232	3	10	10	NUM
iogr-1286	232	4	november	november	PROPN
iogr-1286	232	5	2020	2020	NUM
iogr-1286	232	6	)	)	PUNCT
iogr-1286	232	7	.	.	PUNCT
iogr-1286	233	1	sub	sub	ADJ
iogr-1286	233	2	-	-	ADJ
iogr-1286	233	3	bituminous	bituminous	ADJ
iogr-1286	233	4	coal	coal	NOUN
iogr-1286	233	5	.	.	PUNCT
iogr-1286	234	1	2008	2008	NUM
iogr-1286	234	2	.	.	PUNCT
iogr-1286	235	1	energy	energy	NOUN
iogr-1286	235	2	education	education	NOUN
iogr-1286	235	3	https://energyeducation.ca/encyclopedia/sub-bituminous_coal	https://energyeducation.ca/encyclopedia/sub-bituminous_coal	PROPN
iogr-1286	235	4	(	(	PUNCT
iogr-1286	235	5	accessed	access	VERB
iogr-1286	235	6	27	27	NUM
iogr-1286	235	7	december	december	PROPN
iogr-1286	235	8	2023	2023	NUM
iogr-1286	235	9	)	)	PUNCT
iogr-1286	235	10	.	.	PUNCT
iogr-1286	236	1	taylor	taylor	PROPN
iogr-1286	236	2	,	,	PUNCT
iogr-1286	236	3	g.	g.	PROPN
iogr-1286	236	4	h.	h.	PROPN
iogr-1286	236	5	,	,	PUNCT
iogr-1286	236	6	teichmüller	teichmüller	NOUN
iogr-1286	236	7	,	,	PUNCT
iogr-1286	236	8	m.	m.	NOUN
iogr-1286	236	9	,	,	PUNCT
iogr-1286	236	10	davis	davis	PROPN
iogr-1286	236	11	,	,	PUNCT
iogr-1286	236	12	a.	a.	PROPN
iogr-1286	236	13	,	,	PUNCT
iogr-1286	236	14	et	et	PROPN
iogr-1286	236	15	al	al	PROPN
iogr-1286	236	16	.	.	PROPN
iogr-1286	236	17	1998	1998	NUM
iogr-1286	236	18	.	.	PUNCT
iogr-1286	237	1	organic	organic	ADJ
iogr-1286	237	2	petrology	petrology	NOUN
iogr-1286	237	3	:	:	PUNCT
iogr-1286	237	4	a	a	DET
iogr-1286	237	5	new	new	ADJ
iogr-1286	237	6	handbook	handbook	NOUN
iogr-1286	237	7	incorporating	incorporate	VERB
iogr-1286	237	8	some	some	DET
iogr-1286	237	9	revised	revised	ADJ
iogr-1286	237	10	parts	part	NOUN
iogr-1286	237	11	of	of	ADP
iogr-1286	237	12	stach	stach	NOUN
iogr-1286	237	13	's	's	PART
iogr-1286	237	14	textbook	textbook	NOUN
iogr-1286	237	15	of	of	ADP
iogr-1286	237	16	coal	coal	NOUN
iogr-1286	237	17	petrology	petrology	NOUN
iogr-1286	237	18	.	.	PUNCT
iogr-1286	238	1	gebrüder	gebrüder	NOUN
iogr-1286	238	2	borntraeger	borntraeger	NOUN
iogr-1286	238	3	.	.	PUNCT
iogr-1286	239	1	what	what	PRON
iogr-1286	239	2	are	be	AUX
iogr-1286	239	3	the	the	DET
iogr-1286	239	4	types	type	NOUN
iogr-1286	239	5	of	of	ADP
iogr-1286	239	6	coal	coal	NOUN
iogr-1286	239	7	?	?	PUNCT
iogr-1286	240	1	2017	2017	NUM
iogr-1286	240	2	.	.	PUNCT
iogr-1286	241	1	u.s	u.s	PROPN
iogr-1286	241	2	.	.	PROPN
iogr-1286	241	3	geological	geological	ADJ
iogr-1286	241	4	survey	survey	NOUN
iogr-1286	241	5	.	.	PUNCT
iogr-1286	242	1	https://www.usgs.gov/faqs/what-are-types-coal	https://www.usgs.gov/faqs/what-are-types-coal	PROPN
iogr-1286	242	2	(	(	PUNCT
iogr-1286	242	3	accessed	access	VERB
iogr-1286	242	4	24	24	NUM
iogr-1286	242	5	december	december	PROPN
iogr-1286	242	6	2022	2022	NUM
iogr-1286	242	7	)	)	PUNCT
iogr-1286	242	8	.	.	PUNCT
iogr-1286	243	1	wolfson	wolfson	PROPN
iogr-1286	243	2	,	,	PUNCT
iogr-1286	243	3	r.	r.	PROPN
iogr-1286	243	4	2023	2023	NUM
iogr-1286	243	5	.	.	PUNCT
iogr-1286	244	1	energy	energy	NOUN
iogr-1286	244	2	,	,	PUNCT
iogr-1286	244	3	environment	environment	NOUN
iogr-1286	244	4	,	,	PUNCT
iogr-1286	244	5	and	and	CCONJ
iogr-1286	244	6	climate	climate	NOUN
iogr-1286	244	7	,	,	PUNCT
iogr-1286	244	8	4th	4th	ADJ
iogr-1286	244	9	edition	edition	NOUN
iogr-1286	244	10	.	.	PUNCT
iogr-1286	245	1	new	new	PROPN
iogr-1286	245	2	york	york	PROPN
iogr-1286	245	3	,	,	PUNCT
iogr-1286	245	4	ny	ny	PROPN
iogr-1286	245	5	,	,	PUNCT
iogr-1286	245	6	u.s.a	u.s.a	PROPN
iogr-1286	245	7	.	.	PUNCT
iogr-1286	245	8	:	:	PUNCT
iogr-1286	246	1	w.w	w.w	PROPN
iogr-1286	246	2	.	.	PROPN
iogr-1286	246	3	norton	norton	PROPN
iogr-1286	246	4	inc	inc	PROPN
iogr-1286	246	5	.	.	PROPN
iogr-1286	246	6	xia	xia	PROPN
iogr-1286	246	7	,	,	PUNCT
iogr-1286	246	8	l.	l.	PROPN
iogr-1286	246	9	,	,	PUNCT
iogr-1286	246	10	yin	yin	PROPN
iogr-1286	246	11	,	,	PUNCT
iogr-1286	246	12	y.	y.	PROPN
iogr-1286	246	13	,	,	PUNCT
iogr-1286	246	14	yu	yu	PROPN
iogr-1286	246	15	,	,	PUNCT
iogr-1286	246	16	x.	x.	PROPN
iogr-1286	246	17	,	,	PUNCT
iogr-1286	246	18	et	et	PROPN
iogr-1286	246	19	al	al	PROPN
iogr-1286	246	20	.	.	PROPN
iogr-1286	246	21	2019	2019	NUM
iogr-1286	246	22	.	.	PUNCT
iogr-1286	247	1	an	an	DET
iogr-1286	247	2	approach	approach	NOUN
iogr-1286	247	3	to	to	ADP
iogr-1286	247	4	grading	grade	VERB
iogr-1286	247	5	coalbed	coalbe	VERB
iogr-1286	247	6	methane	methane	NOUN
iogr-1286	247	7	resources	resource	NOUN
iogr-1286	247	8	in	in	ADP
iogr-1286	247	9	china	china	PROPN
iogr-1286	247	10	for	for	ADP
iogr-1286	247	11	the	the	DET
iogr-1286	247	12	purpose	purpose	NOUN
iogr-1286	247	13	of	of	ADP
iogr-1286	247	14	implementing	implement	VERB
iogr-1286	247	15	a	a	DET
iogr-1286	247	16	differential	differential	ADJ
iogr-1286	247	17	production	production	NOUN
iogr-1286	247	18	subsidy	subsidy	NOUN
iogr-1286	247	19	.	.	PUNCT
iogr-1286	248	1	petroleum	petroleum	NOUN
iogr-1286	248	2	science	science	NOUN
iogr-1286	248	3	16(2	16(2	NUM
iogr-1286	248	4	):	):	PUNCT
iogr-1286	248	5	447	447	NUM
iogr-1286	248	6	-	-	SYM
iogr-1286	248	7	457	457	NUM
iogr-1286	248	8	.	.	PUNCT
iogr-1286	249	1	yang	yang	PROPN
iogr-1286	249	2	,	,	PUNCT
iogr-1286	249	3	l.	l.	PROPN
iogr-1286	249	4	1987	1987	NUM
iogr-1286	249	5	.	.	PUNCT
iogr-1286	250	1	national	national	ADJ
iogr-1286	250	2	coal	coal	NOUN
iogr-1286	250	3	mine	mine	PROPN
iogr-1286	250	4	gas	gas	NOUN
iogr-1286	250	5	geological	geological	ADJ
iogr-1286	250	6	map	map	NOUN
iogr-1286	250	7	of	of	ADP
iogr-1286	250	8	china	china	PROPN
iogr-1286	250	9	.	.	PUNCT
iogr-1286	251	1	xi'an	xi'an	PROPN
iogr-1286	251	2	,	,	PUNCT
iogr-1286	251	3	shaanxi	shaanxi	PROPN
iogr-1286	251	4	science	science	PROPN
iogr-1286	251	5	and	and	CCONJ
iogr-1286	251	6	technology	technology	NOUN
iogr-1286	251	7	press	press	NOUN
iogr-1286	251	8	12(3):248	12(3):248	PROPN
iogr-1286	251	9	-	-	SYM
iogr-1286	251	10	257	257	NUM
iogr-1286	251	11	(	(	PUNCT
iogr-1286	251	12	in	in	ADP
iogr-1286	251	13	chinese	chinese	PROPN
iogr-1286	251	14	)	)	PUNCT
iogr-1286	251	15	.	.	PUNCT
iogr-1286	252	1	zhang	zhang	PROPN
iogr-1286	252	2	,	,	PUNCT
iogr-1286	252	3	l.	l.	PROPN
iogr-1286	252	4	,	,	PUNCT
iogr-1286	252	5	kang	kang	PROPN
iogr-1286	252	6	,	,	PUNCT
iogr-1286	252	7	t.	t.	PROPN
iogr-1286	252	8	,	,	PUNCT
iogr-1286	252	9	kang	kang	PROPN
iogr-1286	252	10	,	,	PUNCT
iogr-1286	252	11	j.	j.	PROPN
iogr-1286	252	12	,	,	PUNCT
iogr-1286	252	13	et	et	PROPN
iogr-1286	252	14	al	al	PROPN
iogr-1286	252	15	.	.	PROPN
iogr-1286	252	16	2021	2021	NUM
iogr-1286	252	17	.	.	PUNCT
iogr-1286	253	1	response	response	NOUN
iogr-1286	253	2	of	of	ADP
iogr-1286	253	3	molecular	molecular	ADJ
iogr-1286	253	4	structures	structure	NOUN
iogr-1286	253	5	and	and	CCONJ
iogr-1286	253	6	methane	methane	NOUN
iogr-1286	253	7	adsorption	adsorption	NOUN
iogr-1286	253	8	behaviors	behavior	NOUN
iogr-1286	253	9	in	in	ADP
iogr-1286	253	10	coals	coal	NOUN
iogr-1286	253	11	subjected	subject	VERB
iogr-1286	253	12	to	to	ADP
iogr-1286	253	13	cyclical	cyclical	ADJ
iogr-1286	253	14	microwave	microwave	NOUN
iogr-1286	253	15	exposure	exposure	NOUN
iogr-1286	253	16	.	.	PUNCT
iogr-1286	254	1	acs	acs	PROPN
iogr-1286	254	2	omega	omega	NOUN
iogr-1286	254	3	6(47	6(47	NUM
iogr-1286	254	4	):	):	PUNCT
iogr-1286	254	5	31566	31566	NUM
iogr-1286	254	6	-	-	SYM
iogr-1286	254	7	31577	31577	NUM
iogr-1286	254	8	.	.	PUNCT
iogr-1286	255	1	ibrahim	ibrahim	PROPN
iogr-1286	255	2	modibbo	modibbo	PROPN
iogr-1286	255	3	ahmed	ahmed	PROPN
iogr-1286	255	4	is	be	AUX
iogr-1286	255	5	a	a	DET
iogr-1286	255	6	petroleum	petroleum	NOUN
iogr-1286	255	7	engineer	engineer	NOUN
iogr-1286	255	8	who	who	PRON
iogr-1286	255	9	currently	currently	ADV
iogr-1286	255	10	serves	serve	VERB
iogr-1286	255	11	as	as	ADP
iogr-1286	255	12	a	a	DET
iogr-1286	255	13	research	research	NOUN
iogr-1286	255	14	assistant	assistant	NOUN
iogr-1286	255	15	at	at	ADP
iogr-1286	255	16	cyprus	cyprus	PROPN
iogr-1286	255	17	international	international	PROPN
iogr-1286	255	18	university	university	PROPN
iogr-1286	255	19	,	,	PUNCT
iogr-1286	255	20	north	north	PROPN
iogr-1286	255	21	cyprus	cyprus	PROPN
iogr-1286	255	22	.	.	PUNCT
iogr-1286	256	1	his	his	PRON
iogr-1286	256	2	research	research	NOUN
iogr-1286	256	3	interests	interest	NOUN
iogr-1286	256	4	are	be	AUX
iogr-1286	256	5	coal	coal	NOUN
iogr-1286	256	6	bed	bed	NOUN
iogr-1286	256	7	methane	methane	NOUN
iogr-1286	256	8	(	(	PUNCT
iogr-1286	256	9	cbm	cbm	PROPN
iogr-1286	256	10	)	)	PUNCT
iogr-1286	256	11	,	,	PUNCT
iogr-1286	256	12	enhanced	enhance	VERB
iogr-1286	256	13	oil	oil	NOUN
iogr-1286	256	14	recovery	recovery	NOUN
iogr-1286	256	15	(	(	PUNCT
iogr-1286	256	16	eor	eor	PROPN
iogr-1286	256	17	)	)	PUNCT
iogr-1286	256	18	,	,	PUNCT
iogr-1286	256	19	and	and	CCONJ
iogr-1286	256	20	biogas	biogas	NOUN
iogr-1286	256	21	.	.	PUNCT
iogr-1286	257	1	he	he	PRON
iogr-1286	257	2	holds	hold	VERB
iogr-1286	257	3	a	a	DET
iogr-1286	257	4	bsc	bsc	PROPN
iogr-1286	257	5	and	and	CCONJ
iogr-1286	257	6	msc	msc	PROPN
iogr-1286	257	7	in	in	ADP
iogr-1286	257	8	petroleum	petroleum	NOUN
iogr-1286	257	9	and	and	CCONJ
iogr-1286	257	10	natural	natural	ADJ
iogr-1286	257	11	gas	gas	NOUN
iogr-1286	257	12	engineering	engineering	NOUN
iogr-1286	257	13	from	from	ADP
iogr-1286	257	14	cyprus	cyprus	PROPN
iogr-1286	257	15	international	international	PROPN
iogr-1286	257	16	university	university	PROPN
iogr-1286	257	17	and	and	CCONJ
iogr-1286	257	18	is	be	AUX
iogr-1286	257	19	currently	currently	ADV
iogr-1286	257	20	pursuing	pursue	VERB
iogr-1286	257	21	a	a	DET
iogr-1286	257	22	phd	phd	NOUN
iogr-1286	257	23	in	in	ADP
iogr-1286	257	24	energy	energy	NOUN
iogr-1286	257	25	systems	system	NOUN
iogr-1286	257	26	engineering	engineering	NOUN
iogr-1286	257	27	at	at	ADP
iogr-1286	257	28	cyprus	cyprus	PROPN
iogr-1286	257	29	international	international	PROPN
iogr-1286	257	30	university	university	PROPN
iogr-1286	257	31	.	.	PUNCT
iogr-1286	258	1	dr	dr	PROPN
iogr-1286	258	2	.	.	PROPN
iogr-1286	258	3	saleem	saleem	PROPN
iogr-1286	258	4	qadir	qadir	PROPN
iogr-1286	258	5	tunio	tunio	PROPN
iogr-1286	258	6	is	be	AUX
iogr-1286	258	7	an	an	DET
iogr-1286	258	8	experienced	experienced	ADJ
iogr-1286	258	9	academician	academician	NOUN
iogr-1286	258	10	and	and	CCONJ
iogr-1286	258	11	researcher	researcher	NOUN
iogr-1286	258	12	in	in	ADP
iogr-1286	258	13	the	the	DET
iogr-1286	258	14	field	field	NOUN
iogr-1286	258	15	of	of	ADP
iogr-1286	258	16	petroleum	petroleum	NOUN
iogr-1286	258	17	engineering	engineering	NOUN
iogr-1286	258	18	with	with	ADP
iogr-1286	258	19	phd	phd	NOUN
iogr-1286	258	20	in	in	ADP
iogr-1286	258	21	petroleum	petroleum	NOUN
iogr-1286	258	22	engineering	engineering	NOUN
iogr-1286	258	23	from	from	ADP
iogr-1286	258	24	the	the	DET
iogr-1286	258	25	university	university	PROPN
iogr-1286	258	26	of	of	ADP
iogr-1286	258	27	technology	technology	PROPN
iogr-1286	258	28	petonas	petona	NOUN
iogr-1286	258	29	(	(	PUNCT
iogr-1286	258	30	utp	utp	PROPN
iogr-1286	258	31	)	)	PUNCT
iogr-1286	258	32	malaysia	malaysia	NOUN
iogr-1286	258	33	with	with	ADP
iogr-1286	258	34	master	master	NOUN
iogr-1286	258	35	's	's	PART
iogr-1286	258	36	degree	degree	NOUN
iogr-1286	258	37	in	in	ADP
iogr-1286	258	38	petroleum	petroleum	NOUN
iogr-1286	258	39	engineering	engineering	NOUN
iogr-1286	258	40	from	from	ADP
iogr-1286	258	41	the	the	DET
iogr-1286	258	42	university	university	PROPN
iogr-1286	258	43	of	of	ADP
iogr-1286	258	44	adelaide	adelaide	PROPN
iogr-1286	258	45	,	,	PUNCT
iogr-1286	258	46	australia	australia	PROPN
iogr-1286	258	47	,	,	PUNCT
iogr-1286	258	48	and	and	CCONJ
iogr-1286	258	49	bachelor	bachelor	NOUN
iogr-1286	258	50	's	's	PART
iogr-1286	258	51	in	in	ADP
iogr-1286	258	52	petroleum	petroleum	NOUN
iogr-1286	258	53	and	and	CCONJ
iogr-1286	258	54	natural	natural	ADJ
iogr-1286	258	55	gas	gas	NOUN
iogr-1286	258	56	engineering	engineering	NOUN
iogr-1286	258	57	from	from	ADP
iogr-1286	258	58	mehran	mehran	PROPN
iogr-1286	258	59	university	university	PROPN
iogr-1286	258	60	of	of	ADP
iogr-1286	258	61	engineering	engineering	NOUN
iogr-1286	258	62	and	and	CCONJ
iogr-1286	258	63	technology	technology	NOUN
iogr-1286	258	64	pakistan	pakistan	PROPN
iogr-1286	258	65	.	.	PUNCT
iogr-1286	259	1	his	his	PRON
iogr-1286	259	2	overall	overall	ADJ
iogr-1286	259	3	experience	experience	NOUN
iogr-1286	259	4	is	be	AUX
iogr-1286	259	5	related	relate	VERB
iogr-1286	259	6	to	to	ADP
iogr-1286	259	7	teaching	teaching	NOUN
iogr-1286	259	8	and	and	CCONJ
iogr-1286	259	9	research	research	NOUN
iogr-1286	259	10	for	for	ADP
iogr-1286	259	11	more	more	ADJ
iogr-1286	259	12	than	than	ADP
iogr-1286	259	13	17	17	NUM
iogr-1286	259	14	years	year	NOUN
iogr-1286	259	15	in	in	ADP
iogr-1286	259	16	countries	country	NOUN
iogr-1286	259	17	like	like	ADP
iogr-1286	259	18	(	(	PUNCT
iogr-1286	259	19	pakistan	pakistan	PROPN
iogr-1286	259	20	,	,	PUNCT
iogr-1286	259	21	malaysia	malaysia	PROPN
iogr-1286	259	22	and	and	CCONJ
iogr-1286	259	23	cyprus	cyprus	PROPN
iogr-1286	259	24	)	)	PUNCT
iogr-1286	259	25	which	which	PRON
iogr-1286	259	26	includes	include	VERB
iogr-1286	259	27	teaching	teach	VERB
iogr-1286	259	28	petroleum	petroleum	NOUN
iogr-1286	259	29	engineering	engineering	NOUN
iogr-1286	259	30	courses	course	NOUN
iogr-1286	259	31	both	both	CCONJ
iogr-1286	259	32	at	at	ADP
iogr-1286	259	33	undergraduate	undergraduate	NOUN
iogr-1286	259	34	and	and	CCONJ
iogr-1286	259	35	postgraduate	postgraduate	NOUN
iogr-1286	259	36	levels	level	NOUN
iogr-1286	259	37	and	and	CCONJ
iogr-1286	259	38	supervising	supervise	VERB
iogr-1286	259	39	research	research	NOUN
iogr-1286	259	40	projects	project	NOUN
iogr-1286	259	41	/	/	SYM
iogr-1286	259	42	thesis	thesis	NOUN
iogr-1286	259	43	.	.	PUNCT
iogr-1286	260	1	his	his	PRON
iogr-1286	260	2	research	research	NOUN
iogr-1286	260	3	is	be	AUX
iogr-1286	260	4	related	relate	VERB
iogr-1286	260	5	to	to	ADP
iogr-1286	260	6	unconventional	unconventional	ADJ
iogr-1286	260	7	hydrocarbons	hydrocarbon	NOUN
iogr-1286	260	8	,	,	PUNCT
iogr-1286	260	9	formation	formation	NOUN
iogr-1286	260	10	evaluation	evaluation	NOUN
iogr-1286	260	11	and	and	CCONJ
iogr-1286	260	12	enhanced	enhanced	ADJ
iogr-1286	260	13	hydrocarbons	hydrocarbon	NOUN
iogr-1286	260	14	recovery	recovery	NOUN
iogr-1286	260	15	.	.	PUNCT
iogr-1286	261	1	https://www.bpe.gov.ng/nigerian-coal-corporation/	https://www.bpe.gov.ng/nigerian-coal-corporation/	PROPN
iogr-1286	261	2	https://www.bpe.gov.ng/nigerian-coal-corporation/	https://www.bpe.gov.ng/nigerian-coal-corporation/	PROPN
iogr-1286	261	3	https://en	https://en	PROPN
iogr-1286	261	4	-	-	PUNCT
iogr-1286	261	5	us	us	PROPN
iogr-1286	261	6	/	/	SYM
iogr-1286	261	7	services	service	NOUN
iogr-1286	261	8	/	/	SYM
iogr-1286	261	9	proximate	proximate	VERB
iogr-1286	261	10	-	-	PUNCT
iogr-1286	261	11	and	and	CCONJ
iogr-1286	261	12	-	-	PUNCT
iogr-1286	261	13	ultimate	ultimate	ADJ
iogr-1286	261	14	-	-	PUNCT
iogr-1286	261	15	analysis	analysis	NOUN
iogr-1286	261	16	https://www.usgs.gov/faqs/what-are-types-coal	https://www.usgs.gov/faqs/what-are-types-coal	PROPN
iogr-1286	261	17	abstract	abstract	ADJ
iogr-1286	261	18	introduction	introduction	NOUN
iogr-1286	261	19	literature	literature	PROPN
iogr-1286	261	20	review	review	NOUN
iogr-1286	261	21	methodology	methodology	NOUN
iogr-1286	261	22	results	result	NOUN
iogr-1286	261	23	and	and	CCONJ
iogr-1286	261	24	discussions	discussion	NOUN
iogr-1286	261	25	conclusions	conclusion	NOUN
iogr-1286	261	26	conflicting	conflict	VERB
iogr-1286	261	27	interests	interest	NOUN
iogr-1286	261	28	references	reference	NOUN