<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/ContactPoint>
<http://www.boomerangbooks.com.au/Olavslegenden-og-den-Latinske-Historieskrivning-I-1100-Tallets-Norge/Inger-Ekrem/book_9788772896168.htm>