instance	part_occs	return
Instance-tag-1 (Left)	Part_occur-tag-1	3
	Part_occur-tag-5
	Part_occur-tag-7
Instance-tag-2 (Right)	Part_occur-tag-2	3
	Part_occur-tag-6
	Part_occur-tag-8
Instance-tag-3 (Front)	Part_occur-tag-3	1
Instance-tag-4 (Rear)	Part_occur-tag-4	1