<https://forum.mrw.it/threads/passare-una-variabile-da-una-pagina-allaltra.42831/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://forum.mrw.it/threads/passare-una-variabile-da-una-pagina-allaltra.42831/#post-167813>