<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/2013/01/08/130108004133_iceland_304x171_bbc.jpg>
<http://www.bbc.com/mundo/noticias/2012/03/130107_economia_islandia_crisis_recuperacion_irm.shtml>