<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/2013/01/06/130106102013_assad_304x171_afp.jpg>
<http://www.bbc.com/mundo/noticias/2013/04/130426_tecnologia_armada_electronica_siria_aa.shtml>