query: SELECT ?item ?itemLabel ?p ?statement ?statedLabel ?wID ?url ?name ?date ?pr ?pr_
      WHERE {
        ?statement prov:wasDerivedFrom ?ref.
        ?item ?p ?statement.
        filter (?p in (p:P2949))
        ?ref ?pr ?pr_ . 
        filter (?pr in (pr:P854))
        Optional {?ref pr:P248 ?stated}
        Optional {?ref pr:P2949 ?wID}
        Optional {?ref pr:P854 ?url}
        Optional {?ref pr:P1810 ?name}
        Optional {?ref pr:P813 ?date}
        SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
      }