_:vb50801983	<http://www.w3.org/ns/r2rml#predicate>	<http://schema.org/givenName> .
_:vb50801983	<http://www.w3.org/ns/r2rml#objectMap>	_:vb50801984 .
_:vb50801984	<http://www.w3.org/ns/r2rml#column>	"vorname" .