<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2014/05/03/140503141312__74510584_navarro.jpg>
<http://www.bbc.com/mundo/noticias/2014/05/140502_panama_elecciones_presidenciales_mz.shtml>