68. #Was there a launch on 16 th July 1969? PREFIX space: <http://purl.org/net/schemas/space/> PREFIX xsd: <http://www.w3.org/2001/XMLSchema#> ASK WHERE { ?launch space:launched "1969-07-16"^^xsd:date. }
90. Field Predicate Map Associate a short name to a RDF property Properties in field predicate map are indexed for searching Short name used in query syntax, sort order, etc