<https://secure.gravatar.com/avatar/142c20f8e98cf8e45fe707226187a4e8?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://quecafetera.com/cafeteras-de-goteo-con-temporizador/>