<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/WebSite>
<http://magonia.com/2013/02/04/un-profesor-de-la-universidad-de-pais-vasco-afirma-en-un-libro-que-la-tierra-es-el-centro-del-universo/>