_:vb50911356	<http://www.w3.org/ns/r2rml#column>	"gender" .
_:vb50911355	<http://www.w3.org/ns/r2rml#objectMap>	_:vb50911356 .
_:vb50911355	<http://www.w3.org/ns/r2rml#predicateMap>	_:vb50911354 .
_:vb50911354	<http://www.w3.org/ns/r2rml#constant>	<http://xmlns.com/foaf/0.1/gender> .