_:vb50935844	<http://www.w3.org/ns/r2rml#objectMap>	_:vb50935845 .
_:vb50935844	<http://www.w3.org/ns/r2rml#predicateMap>	_:vb50935843 .
_:vb50935845	<http://www.w3.org/ns/r2rml#column>	"DepartmentID" .
_:vb50935843	<http://www.w3.org/ns/r2rml#constant>	<http://demo.openlinksw.com/schemas/School/departmentid> .