<https://macmagazine.com.br/post/2010/04/10/agora-o-twitter-twitta-com-o-tweetie/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://macmagazine.com.br/post/2010/04/10/agora-o-twitter-twitta-com-o-tweetie/>