query: SELECT DISTINCT ?item ?object ?creatiedatum
    WITH {
    SELECT ?item WHERE {
    ?item wdt:P31 wd:Q5.
    ?item wdt:P6379 ?collection.
    FILTER NOT EXISTS {?item wdt:P7763 []}.  
    FILTER NOT EXISTS {?item wdt:P570 []}.  
    FILTER NOT EXISTS {?item wdt:P1317 []}.  
    } 
    } AS %results
    WHERE {
      INCLUDE %results.
    {?object wdt:P170 ?item.
    ?object wdt:P6216 wd:Q50423863 .  
    OPTIONAL {
    ?object wdt:P571 ?creatiedatum.
    }
    #TODO: GROUP by YEAR and filter on most recent date
    FILTER NOT EXISTS {
    ?sitelink schema:about ?item .
    ?sitelink schema:inLanguage ?lang .   
    ?sitelink schema:isPartOf [ wikibase:wikiGroup "wikipedia" ] .
   
    }
    }#maker
  }