_:vb50791109	<http://www.w3.org/ns/r2rml#objectMap>	_:vb50791111 .
_:vb50791111	<http://www.w3.org/ns/r2rml#column>	"SeriesFirstDown" .
_:vb50791109	<http://www.w3.org/ns/r2rml#predicateMap>	_:vb50791110 .
_:vb50791111	<http://www.w3.org/ns/r2rml#datatype>	<http://www.w3.org/2001/XMLSchema#boolean> .
_:vb50791110	<http://www.w3.org/ns/r2rml#constant>	<http://demo.openlinksw.com/schemas/nfl/seriesfirstdown> .