<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2014/06/12/140612165556_sting_trudy_styler_464x261_getty.jpg>
<http://www.bbc.com/mundo/noticias/2014/06/140612_vert_cul_canciones_malentendidas_yv.shtml>