<https://secure.gravatar.com/avatar/1aa7737862e51c504d45ae369bae4f38?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://chien-beagle.fr/education/comment-voyager-avec-un-beagle/>