<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2013/08/01/130801100700_rajoy_304x171_afp.jpg>
<http://www.bbc.com/mundo/ultimas_noticias/2013/08/130801_ultnot_mariano_rajoy_presentacion_congreso_espana.shtml>