query: SELECT DISTINCT ?item ?itemLabel ?collecties WHERE {
    ?item wdt:P6379 wd:Q679527.
    ?item wdt:P6379 ?collecties.
    FILTER (?collecties NOT IN (wd:Q679527))
  #  ?item wdt:P6379 ?object1, ?object2 .
  #  FILTER ( ?object1 != ?object2 )
      SERVICE wikibase:label { bd:serviceParam wikibase:language "nl,en". }
  }
  ORDER BY ?item