<https://secure.gravatar.com/avatar/0167ce8e1cbec6b926d2c0ef74e758ba?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://beteve.cat/societat/cadena-escola-llacuna-setmana-silenci/>