<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2014/06/11/140611094725_eric_cantor_624x351_getty_nocredit.jpg>
<http://www.bbc.com/mundo/ultimas_noticias/2014/06/140611_ultnot_cantor_congreso_estados_unidos_amv.shtml>