<https://www.maringuiden.se/forum/topic/109131-varmg%C3%A5ng-och-kompression-b20/#comment-843458>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.maringuiden.se/forum/topic/109131-varmg%C3%A5ng-och-kompression-b20/?tab=comments#comment-843453>