_:vb51062949	<http://www.w3.org/ns/r2rml#column>	"positions_startDate" .
_:vb51062949	<http://www.openlinksw.com/schemas/virtrdf#bnode-row>	"45" .
_:vb51062949	<http://www.w3.org/ns/r2rml#termType>	<http://www.w3.org/ns/r2rml#Literal> .