id	sid	eid	entity	type
can-580	1	1	2020	DATE
can-580	1	2	3	CARDINAL
can-580	1	3	1	CARDINAL
can-580	1	4	the ministry of education	ORG
can-580	1	5	lanzhou university	ORG
can-580	1	6	lanzhou 730000	GPE
can-580	1	7	gansu province	GPE
can-580	1	8	china	GPE
can-580	8	1	al et al	PERSON
can-580	11	1	al et al et al	PERSON