_:vb50714020	<http://www.w3.org/ns/r2rml#column>	"system_en" .
_:vb50714020	<http://www.w3.org/ns/r2rml#language>	"en" .
_:vb50714020	<http://www.openlinksw.com/schemas/virtrdf#bnode-row>	"58" .