<https://forum.macmagazine.com.br/topic/35230-rastreamento-mbp/page/6/#comment-200917>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://forum.macmagazine.com.br/topic/35230-rastreamento-mbp/page/6/?tab=comments#comment-201358>