id	sid	eid	entity	type
ar-20243	1	1	john porter	PERSON
ar-20243	1	2	michael burawoy's	PERSON
ar-20243	3	1	first	ORDINAL
ar-20243	4	1	marxian labour economics	ORG
ar-20243	4	2	marxian	NORP
ar-20243	7	1	post-second	EVENT
ar-20243	11	1	one	CARDINAL
ar-20243	11	2	23	CARDINAL
ar-20243	16	1	the fifties	DATE
ar-20243	21	1	24	CARDINAL
ar-20243	21	2	the contemporary labour force	ORG
ar-20243	24	1	25	CARDINAL