query: SELECT DISTINCT ?item ?itemLabel ?labelen ?nllabel ?aliashaakjeweg ?aliasdejonge ?aliasdeoude WHERE {
    ?item rdfs:label ?label.
    ?item rdfs:label ?labelen.
    ?item wdt:P650 ?rkd.
    SERVICE wikibase:label { bd:serviceParam wikibase:language "nl, en". }
    FILTER((LANG(?label)) = "nl")
    FILTER((LANG(?labelen)) = "en")
    BIND(REPLACE(STR(?label)," ?(\\([^\\)]{1,}\\))","") AS ?nllabel) .
    BIND(REPLACE(STR(?label),"\\(([^\\)]{1,})\\)","$1") AS ?aliashaakjeweg) .
    BIND(REPLACE(STR(?label),"\\((I|jr\\.?)\\)","de Jonge") AS ?aliasdejonge) .
    BIND(REPLACE(STR(?label),"\\((II|sr\\.?)\\)","de Oude") AS ?aliasdeoude) .
    FILTER(STRENDS(?label, ")"))
  }