<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/WebSite>
<http://www.beliefnet.com/columnists/palabrasquefortalecen/2013/01/la-via-lactea-tiene-cien-mil-millones-de-planetas.html/milky-way-over-the-desert/>