_:vb51208681	<http://www.w3.org/ns/r2rml#graphMap>	_:vb51208683 .
_:vb51208682	<http://www.w3.org/ns/r2rml#column>	"ContactName" .
_:vb51208681	<http://www.w3.org/ns/r2rml#predicate>	<http://schema.org/name> .
_:vb51208681	<http://www.w3.org/ns/r2rml#objectMap>	_:vb51208682 .
_:vb51208683	<http://www.w3.org/ns/r2rml#constant>	<http://demo.openlinksw.com/schemas/claude_northwind#graph> .