<https://www.metal-rules.com/#/schema/person/81b40d9f226653c1d1d73f3d6f4503d9>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.metal-rules.com/2006/07/26/amorphis-keyboardist-santeri-kallio/>