<https://www.escuadron69.net/foro/index.php?/topic/70498-coop-abrelatas/#comment-1063402>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.escuadron69.net/foro/index.php?/topic/70498-coop-abrelatas/&tab=comments#comment-1063610>