_:vb39695	<http://www.w3.org/ns/r2rml#predicateMap>	_:vb39696 .
_:vb39697	<http://www.w3.org/ns/r2rml#column>	"system_en" .
_:vb39695	<http://www.w3.org/ns/r2rml#objectMap>	_:vb39697 .
_:vb39697	<http://www.w3.org/ns/r2rml#language>	"en" .
_:vb39696	<http://www.w3.org/ns/r2rml#constant>	<http://rs.tdwg.org/dwc/terms/earliestPeriodOrLowestSystem> .