_:vb39520	<http://www.w3.org/ns/r2rml#constant>	<http://rs.tdwg.org/dwc/terms/geodeticDatum> .
_:vb39521	<http://www.w3.org/ns/r2rml#column>	"refsys" .
_:vb39519	<http://www.w3.org/ns/r2rml#predicateMap>	_:vb39520 .
_:vb39519	<http://www.w3.org/ns/r2rml#objectMap>	_:vb39521 .