<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2013/12/07/131207093855_bali_talks_wto_624x351_reuters.jpg>
<http://www.bbc.com/portuguese/noticias/2013/12/131207_omc_desbloqueia_rodada_an.shtml>