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ajst-29859	2	2	2	CARDINAL
ajst-29859	2	3	83	CARDINAL
ajst-29859	2	4	tao jiang† †college of environmental	PERSON
ajst-29859	2	5	north china electric power university	ORG
ajst-29859	4	1	china	GPE
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ajst-29859	20	2	thfa	PERSON
ajst-29859	21	1	thfa	TIME
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ajst-29859	54	1	181–190	CARDINAL
ajst-29859	55	1	3	CARDINAL
ajst-29859	57	1	today	DATE
ajst-29859	57	2	207, 2013	DATE
ajst-29859	59	1	4	CARDINAL
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ajst-29859	61	1	american	NORP
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ajst-29859	66	2	wang	ORG
ajst-29859	66	3	x.	GPE
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ajst-29859	70	1	zhou	PERSON
ajst-29859	72	1	34	CARDINAL
ajst-29859	72	2	3	CARDINAL
ajst-29859	72	3	2016	DATE
ajst-29859	73	1	347–356	CARDINAL