<https://data.muziekschatten.nl/som/4b2fd16b4122e9ad34b910a7af9100d6> <http://schema.org/keywords> "Bertolf" .
<https://data.muziekschatten.nl/som/4b2fd16b4122e9ad34b910a7af9100d6> <http://schema.org/name> "Bertolf" .
<https://data.muziekschatten.nl/som/4b2fd16b4122e9ad34b910a7af9100d6> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://schema.org/Person> .