<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2014/07/07/140707193644_sp_flowers_in_bulgaria_304x171_ap.jpg>
<http://www.bbc.com/mundo/noticias/2014/07/140707_economia_venta_de_perfumes_online_bd.shtml>