<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/SearchAction>
<http://tecnogers.altervista.org/forum/sony-playstation-3-and-playstation-4-a/21581-xbox-one-vs-playstation-4-quale-console-di-gioco-e-la-migliore.html>