<https://secure.gravatar.com/avatar/69004c004ede70d3355bad47e33cfc52?s=96&amp;d=mm&amp;r=pg>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.maison-et-domotique.com/124111-synthese-semaine-47-2020/>