<https://secure.gravatar.com/avatar/4d7a3fc06efd2736bd608007e4f9302f?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.romamarittima.it/pagine-utili/amministratori-di-condominio/>