_:vb51208653	<http://www.w3.org/ns/r2rml#template>	"http://demo.openlinksw.com/schemas/claude_northwind/category/{CategoryID}" .
_:vb51208654	<http://www.w3.org/ns/r2rml#constant>	<http://demo.openlinksw.com/schemas/claude_northwind#graph> .
_:vb51208653	<http://www.w3.org/ns/r2rml#graphMap>	_:vb51208654 .
_:vb51208653	<http://www.w3.org/ns/r2rml#class>	<http://schema.org/Category> .