id	sid	eid	entity	type
bece-991	1	1	bece	ORG
bece-991	2	1	2023 1723	DATE
bece-991	2	2	liu	PERSON
bece-991	2	3	j. a.	PERSON
bece-991	2	4	& xu	PERSON
bece-991	2	5	ji’an liu	PERSON
bece-991	2	6	university of chinese academy of sciences	ORG
bece-991	2	7	china	GPE
bece-991	8	1	covid-19	PRODUCT
bece-991	9	1	8-12 minutes	TIME
bece-991	9	2	chinese	NORP
bece-991	11	1	april to june 2021	DATE
bece-991	11	2	642	CARDINAL
bece-991	11	3	501	CARDINAL
bece-991	11	4	78.04%	PERCENT
bece-991	12	1	25.56 years old	DATE
bece-991	13	1	2023 1724	CARDINAL
bece-991	14	1	journal of east china normal university	ORG
bece-991	14	2	2023	CARDINAL
bece-991	14	3	2023(2):25	CARDINAL