_:vb51207835	<http://www.w3.org/ns/r2rml#objectMap>	_:vb51207836 .
_:vb51207835	<http://www.w3.org/ns/r2rml#predicate>	<http://schema.org/orderItemNumber> .
_:vb51207836	<http://www.w3.org/ns/r2rml#column>	"ProductID" .