<https://data.muziekschatten.nl/som/aa6f2ee3b071c19fef3a6010ed781312> <http://schema.org/keywords> "William P. Mackay" .
<https://data.muziekschatten.nl/som/aa6f2ee3b071c19fef3a6010ed781312> <http://schema.org/name> "William P. Mackay" .
<https://data.muziekschatten.nl/som/aa6f2ee3b071c19fef3a6010ed781312> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://schema.org/Person> .