<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2012/09/02/120902124520_afghan_304x171_reuters.jpg>
<http://www.bbc.com/mundo/ultimas_noticias/2014/06/140625_ultnot_afganistan_ataque_men.shtml>