_:vb51110766	<http://www.w3.org/2007/05/powder-s#describedby>	<https://demo.openlinksw.com/about/id/entity/urn/cwd:r2rml:physical> .
_:vb51110766	<http://www.w3.org/ns/r2rml#column>	"postal_code" .