<https://secure.gravatar.com/avatar/b2f03c9aec43c67d849d1be1731f898c?s=96&d=mm&r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://geekiegames.geekie.com.br/blog/vencer-o-tempo-na-prova-do-enem/>