_:b75509954	<http://schema.org/value>	"1991" .
_:b75509954	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://schema.org/PropertyValue> .
_:b75509954	<http://www.w3.org/2000/01/rdf-schema#label>	"DORIS id" .
_:b75509954	<http://schema.org/propertyID>	<http://www.wikidata.org/prop/direct/P4630> .