<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/2014/05/08/140508123750_dave_gorman_512x288_bbc.jpg>
<http://www.bbc.com/mundo/blogs/2014/05/140516_blog_editores_relojes_felices_ms.shtml>