<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2013/06/19/130619001958_sp_manifestacion_brasil_304x171_ap.jpg>
<http://www.bbc.com/mundo/noticias/2013/06/130618_brasil_protestas_cambio_lav.shtml?postId=116515509>