query: SELECT DISTINCT ?item ?itemLabel (SAMPLE(?refURL) AS ?url) WHERE {
    ?item p:P69 ?statement .
    ?statement ps:P69 wd:Q523926 .
    ?statement pq:P582 ?date .
    FILTER NOT EXISTS { ?statement pq:P812 ?nothing . }
    OPTIONAL { 
      ?statement prov:wasDerivedFrom ?ref . 
      ?ref pr:P854 ?refURL .
    }
    SERVICE wikibase:label { bd:serviceParam wikibase:language "en" }
  } GROUP BY ?item ?itemLabel