<https://www.bmwzforum.nl/forums/topic/8989-z-4-hardtop-voorbereiding/#comment-173099>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.bmwzforum.nl/forums/topic/8989-z-4-hardtop-voorbereiding/>