_:vb4640725	<http://www.w3.org/2006/time#inXSDDate>	"1821-02-23"^^<http://www.w3.org/2001/XMLSchema#date> .
_:vb4640725	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2006/time#Instant> .