<https://secure.gravatar.com/avatar/2a23f8bda4bbe0737a9718dcd9092d2a?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://giornatamondiale.it/calendar/action~stream/cat_ids~42/request_format~html/>