<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2013/01/03/130103195321_begium_chocolaterie_304x171_getty_nocredit.jpg>
<http://www.bbc.com/mundo/noticias/2013/01/130103_belgica_capital_chocolate_jgc.shtml>