<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/2014/07/140723_mh17_malaysia_airlines_protagonistas_crisis_ucrania_ac.shtml>