_:vb50957918	<http://www.w3.org/ns/r2rml#predicateMap>	_:vb50957919 .
_:vb50957918	<http://www.w3.org/ns/r2rml#objectMap>	_:vb50957920 .
_:vb50957918	<http://www.openlinksw.com/schemas/virtrdf#bnode-row>	"15" .
_:vb50957919	<http://www.openlinksw.com/schemas/virtrdf#bnode-row>	"15" .
_:vb50957920	<http://www.w3.org/ns/r2rml#column>	"erstautor" .
_:vb50957919	<http://www.w3.org/ns/r2rml#constant>	<http://purl.org/dc/terms/source> .
_:vb50957920	<http://www.openlinksw.com/schemas/virtrdf#bnode-row>	"15" .