<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#nil>
<http://www.bbc.com/mundo/noticias/2014/04/140423_vert_fut_salud_bebe_escondidas_gtg.shtml?show_captcha=true>