_:vb50791901	<http://www.w3.org/ns/r2rml#predicateMap>	_:vb50791902 .
_:vb50791902	<http://www.w3.org/ns/r2rml#constant>	<http://demo.openlinksw.com/schemas/nfl/issack> .
_:vb50791901	<http://www.w3.org/ns/r2rml#objectMap>	_:vb50791903 .
_:vb50791903	<http://www.openlinksw.com/schemas/virtrdf#bnode-row>	"40" .
_:vb50791902	<http://www.openlinksw.com/schemas/virtrdf#bnode-row>	"40" .
_:vb50791901	<http://www.openlinksw.com/schemas/virtrdf#bnode-row>	"40" .
_:vb50791903	<http://www.w3.org/ns/r2rml#column>	"IsSack" .
_:vb50791903	<http://www.w3.org/ns/r2rml#datatype>	<http://www.w3.org/2001/XMLSchema#boolean> .