_:vb50990471	<http://www.w3.org/ns/r2rml#column>	"facebook_url" .
_:vb50990471	<http://www.openlinksw.com/schemas/virtrdf#bnode-row>	"178" .
_:vb50990471	<http://www.w3.org/ns/r2rml#termType>	<http://www.w3.org/ns/r2rml#IRI> .