query: PREFIX wikibase: <http://wikiba.se/ontology#>
  PREFIX wd: <http://www.wikidata.org/entity/> 
  PREFIX wdt: <http://www.wikidata.org/prop/direct/>
  PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
  
  PREFIX p: <http://www.wikidata.org/prop/>
  PREFIX pq: <http://www.wikidata.org/prop/qualifier/>
  PREFIX ps: <http://www.wikidata.org/prop/statement/>
  
  SELECT ?item ?itemLabel ?nom ?nomLabel ?werk ?werklbl
  {
    ?item p:P1411 ?nom_stmt .
    ?nom_stmt ps:P1411 ?nom .
     FILTER NOT EXISTS { ?nom_stmt pq:P585 ?x } .
    OPTIONAL {?nom_stmt pq:P1686 ?werk . OPTIONAL {?werk rdfs:label ?werklbl filter (lang(?werklbl) = "nl") .} }
    
  SERVICE wikibase:label {
      bd:serviceParam wikibase:language "nl,en" .
    }
  } ORDER BY ASC(?item)