<https://secure.gravatar.com/avatar/5ff79ada4bc6daea4da8167c34487f1e?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://uscasinomagazine.com/poker/news-gto-poker-theories-rolestorming/>