<https://www.limber.io/documentation/faq/canaux/comment-definir-un-creneau-de-publication-pour-un-canal/#primaryimage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.limber.io/documentation/faq/canaux/comment-definir-un-creneau-de-publication-pour-un-canal/>