<https://secure.gravatar.com/avatar/144f93eb847524f2cc9d070b79c3a12f?s=96&amp;d=identicon&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://transtecnia.cl/articulo-laboral/en-que-esta-el-proyecto-de-retorno-gradual-y-seguro-al-trabajo-presencial/>