<https://www.srfa.info/forums/topic/98982-ok-triple-ajout-du-m%C3%AAme-rat/#comment-1699459>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.srfa.info/forums/topic/98982-ok-triple-ajout-du-m%C3%AAme-rat/>