query: SELECT ?item ?value WHERE {
    ?ref pr:P4656 ?value .
    ?statement prov:wasDerivedFrom ?ref.
    ?item ?p ?statement .
    BIND( REGEX( STR( ?value ), "https?://[a-z]{2,3}\\.wikipedia\\.org" ) AS ?regexresult ) .
    FILTER( ?regexresult = false ) .
  } 
  