<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2013/05/21/130521071341_parla_304x171_reuters.jpg>
<http://www.bbc.com/mundo/ultimas_noticias/2013/05/130521_ultnot_evasion_fiscal_lp.shtml>