_:vb50987740	<http://www.w3.org/ns/r2rml#constant>	<http://demo.openlinksw.com/schemas/NorthwindQA/firstname> .
_:vb50987739	<http://www.w3.org/ns/r2rml#objectMap>	_:vb50987741 .
_:vb50987740	<http://www.openlinksw.com/schemas/virtrdf#bnode-row>	"45" .
_:vb50987741	<http://www.openlinksw.com/schemas/virtrdf#bnode-row>	"45" .
_:vb50987739	<http://www.w3.org/ns/r2rml#predicateMap>	_:vb50987740 .
_:vb50987739	<http://www.openlinksw.com/schemas/virtrdf#bnode-row>	"45" .
_:vb50987741	<http://www.w3.org/ns/r2rml#column>	"FirstName" .