_:vb50911248	<http://www.w3.org/ns/r2rml#column>	"ip_address" .
_:vb50911247	<http://www.w3.org/ns/r2rml#objectMap>	_:vb50911248 .
_:vb50911247	<http://www.w3.org/ns/r2rml#predicateMap>	_:vb50911246 .
_:vb50911246	<http://www.w3.org/ns/r2rml#constant>	<http://demo.openlinksw.com/schemas/DB/ip_address> .