<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2014/05/02/140502092241_oscar_rodriguez_304x171_getty.jpg>
<http://www.bbc.com/mundo/noticias/2014/05/140502_vaticano_iglesia_tortura_onu_ch.shtml>