<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2013/08/24/130824025522_sabrina_fulton_trayvon_martin_304x171_reuters.jpg>
<http://www.bbc.com/mundo/ultimas_noticias/2013/08/130823_ultnot_trayvon_martin_madre_jgc.shtml>