<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ichef.bbci.co.uk/news/ws/560/amz/worldservice/live/assets/images/2014/09/13/140913030949_china_ilhas_plantadas_mar_meridional_624x351_bbc_nocredit.jpg>
<http://www.bbc.com/mundo/noticias/2016/02/160217_mar_meridional_china_islas_misiles_amv>