<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2014/09/02/140902082840_al_shabab_304x171_ap_nocredit.jpg>
<http://www.bbc.com/mundo/ultimas_noticias/2014/09/140902_ultnot_somalia_shabab_estados_unidos_ig.shtml>