<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/2014/06/30/140630225838_sp_bachelet_and_obama_464x261_getty.jpg>
<http://www.bbc.com/mundo/ultimas_noticias/2014/06/140630_ultnot_michelle_bachelet_visita_a_obama_bd.shtml>