<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/2016/03/01/160301213441_abu_musab_al_zarqawi_624x351_departamentodedefensadeee.uu._nocredit.jpg>
<http://www.bbc.com/mundo/noticias/2016/03/160301_eeuu_bin_laden_herencia_yihad_millones_ab>