query: SELECT DISTINCT ?item ?itemLabel ?date_of_birth ?article WHERE {
      ?item wdt:P21 wd:Q6581072.
      ?item wdt:P6379 wd:Q2191118.
      OPTIONAL {
      ?article schema:about ?item .
      ?article schema:isPartOf <https://nl.wikipedia.org/>.
        }
    OPTIONAL { ?item wdt:P569 ?date_of_birth. }
    SERVICE wikibase:label { bd:serviceParam wikibase:language "nl, en". }
  }