<https://www.geoforum.fr/topic/36693-quizz-de-fin-de-semaine/page/15/#comment-678059>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.geoforum.fr/topic/36693-quizz-de-fin-de-semaine/page/15/?tab=comments#comment-677862>