query: SELECT ?item ?itemLabel ?statement ?value (STRLEN(STR(?value)) AS ?stringlength)
  {
  	{
  		SELECT ?ref ?value
  		{
                  hint:Query hint:optimizer "None".
                  ?ref pr:P4656 ?value .
                  FILTER NOT EXISTS { ?ref pr:P3452 [] }
    			    FILTER(  CONTAINS( str(?value), "wikidata.org" ) 
                           && !CONTAINS( str(?value), "proposal" ) 
                        )
  		} 
  		LIMIT 1
  	} .
  	?statement prov:wasDerivedFrom ?ref .
  	?item ?p2 ?statement .  
  	SERVICE wikibase:label { bd:serviceParam wikibase:language "en" } .
  }