<https://secure.gravatar.com/avatar/00e85be49a4eaeec9df2ffd1424defe5?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://solotutos.com/como-ver-tu-historial-de-comentarios-de-youtube/>