<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2014/05/24/140524165231_jewish_museum_brussels_304x171_reuters.jpg>
<http://www.bbc.com/mundo/ultimas_noticias/2014/05/140524_ultnot_bruselas_ataque_museo_men.shtml>