_:vb50780085	<http://www.w3.org/ns/r2rml#constant>	<http://www.w3.org/2000/01/rdf-schema#comment> .
_:vb50780086	<http://www.w3.org/ns/r2rml#predicateMap>	_:vb50780085 .
_:vb50780087	<http://www.w3.org/ns/r2rml#column>	"description" .
_:vb50780086	<http://www.w3.org/ns/r2rml#objectMap>	_:vb50780087 .