<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2013/02/04/130204043837_scotland_yard_304x171_afp.jpg>
<http://www.bbc.com/portuguese/noticias/2013/11/131122_mulheres_escravizadas_suspeitos_mm.shtml>