4 http://bag.basisregistraties.overheid.nl/
   1253 http://d-nb.info/
   4471 http://musicbrainz.org/
    426 https://dblp.org/
      1 https://d-nb.info/
      1 https://open.spotify.com/
   3908 https://orcid.org/
      1 https://viaf.org/
   5743 http://sws.geonames.org/
      1 https://www.instagram.com/
  18447 http://viaf.org/
 526236 http://www.wikidata.org/