_:vb50809583	<http://www.w3.org/ns/r2rml#predicateMap>	_:vb50809584 .
_:vb50809583	<http://www.w3.org/ns/r2rml#objectMap>	_:vb50809585 .
_:vb50809584	<http://www.w3.org/ns/r2rml#constant>	<http://demo.openlinksw.com/schemas/nfl#istouchdown> .
_:vb50809585	<http://www.w3.org/ns/r2rml#column>	"IsTouchdown" .
_:vb50809585	<http://www.w3.org/ns/r2rml#datatype>	<http://www.w3.org/2001/XMLSchema#boolean> .