Jena推理机

				PREFIX  xsd:    
				PREFIX  dc:     
				PREFIX  :       
				
				SELECT ?date ?title
				{ 
				  ?g dc:date ?date . FILTER (?date > "2005-08-01T00:00:00Z"^^xsd:dateTime )
				  GRAPH ?g 
				      { ?b dc:title ?title }
				}