_:vb51063556	<http://www.w3.org/2007/05/powder-s#describedby>	<https://demo.openlinksw.com/about/id/entity/urn/rdfviews:demo:recruitment> .
_:vb51063556	<http://www.w3.org/ns/r2rml#column>	"positions_startDate" .