id	sid	eid	entity	type
bece-1639	1	1	bece	ORG
bece-1639	2	1	no.1	ORG
bece-1639	2	2	2025	DATE
bece-1639	2	3	1999	DATE
bece-1639	2	4	secondary	ORDINAL
bece-1639	2	5	china	GPE
bece-1639	2	6	li, c. & sun	ORG
bece-1639	2	7	zhijun sun	PERSON
bece-1639	2	8	beijing normal university	ORG
bece-1639	2	9	china	GPE
bece-1639	3	1	szhijun@bnu.edu.cn	PERSON
bece-1639	3	2	o	DATE
bece-1639	3	3	china	GPE
bece-1639	4	1	china	GPE
bece-1639	4	2	2011-2018	DATE
bece-1639	5	1	•	CARDINAL
bece-1639	5	2	two	CARDINAL
bece-1639	6	1	2014-2017	DATE
bece-1639	6	2	2018	DATE
bece-1639	7	1	•	CARDINAL
bece-1639	9	1	•	CARDINAL
bece-1639	11	1	hukou	GPE
bece-1639	12	1	no.1	ORG
bece-1639	12	2	2025	DATE
bece-1639	12	3	2000	DATE
bece-1639	12	4	•	CARDINAL
bece-1639	13	1	•	CARDINAL
bece-1639	14	1	2025	CARDINAL
bece-1639	14	2	21(02):162-178	CARDINAL