7831050 http://bag.basisregistraties.overheid.nl/
2969005 http://data.bibliotheken.nl/
10364299 http://d-nb.info/
      1 http://eu-football.info/
 461100 http://musicbrainz.org/
      1 http://primariavaleamare-valcea.ro/
 217056 https://data.rkd.nl/
2569190 https://dblp.org/
      1 https://musicbrainz.org/
3717548 http://sws.geonames.org/
11620888 http://viaf.org/
65499509 http://www.wikidata.org/