<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/BreadcrumbList>
<http://acontecimientos2012.latin-foro.net/t2120-la-antimateria-se-utiliza-a-diario-en-los-hospitales-jeffrey-s-hangst-el-fisico-del-cern-entrevista>