_:vb3996400 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2006/time#Instant> . _:vb3996400 <http://www.w3.org/2006/time#inXSDDate> "1800"^^<http://www.w3.org/2001/XMLSchema#gYear> .