_:vb50990999	<http://www.w3.org/ns/r2rml#objectMap>	_:vb50991001 .
_:vb50990999	<http://www.openlinksw.com/schemas/virtrdf#bnode-row>	"18" .
_:vb50990999	<http://www.w3.org/ns/r2rml#predicateMap>	_:vb50991000 .
_:vb50991001	<http://www.openlinksw.com/schemas/virtrdf#bnode-row>	"18" .
_:vb50991000	<http://www.openlinksw.com/schemas/virtrdf#bnode-row>	"18" .
_:vb50991001	<http://www.w3.org/ns/r2rml#column>	"created_at" .
_:vb50991000	<http://www.w3.org/ns/r2rml#constant>	<http://www.openlinksw.com/schemas/crunchbase#createdAt> .