<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef-1.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2014/02/07/140207050332_sp_hong_kong_304x171_afp.jpg>
<http://www.bbc.com/mundo/noticias/2014/02/140207_ultnot_hong_kong_bomba_en.shtml>