<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/Organization>
<http://monimega.com/blog/2013/02/08/reti-vpn-scambiare-dati-in-sicurezza-con-i-sistemi-collegati-alla-lan-amahi-e-openvpn/>