<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2014/06/19/140619051504_sp_mexicanos_304x171_getty.jpg>
<http://www.bbc.com/mundo/ultimas_noticias/2014/06/140618_ultnot_racismo_mexico_mundial_msd.shtml>