<https://secure.gravatar.com/avatar/c8e3a06c69caa96cd2b1a7cc6032d067?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://smartprotections.it/spir-pa-smart-protections-tubi-spiralati-pa-12/>