_:vb50807004	<http://www.w3.org/ns/r2rml#column>	"aerathem_en" .
_:vb50807003	<http://www.w3.org/ns/r2rml#objectMap>	_:vb50807004 .
_:vb50807004	<http://www.w3.org/ns/r2rml#language>	"en" .
_:vb50807003	<http://www.w3.org/ns/r2rml#predicateMap>	_:vb50807002 .
_:vb50807002	<http://www.w3.org/ns/r2rml#constant>	<http://rs.tdwg.org/dwc/terms/earliestEraOrLowestErathem> .