<https://theunshut.com/3511-8-trucos-de-google-slides-para-ser-un-maestro-de-las-presentaciones>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://theunshut.com/3511-8-trucos-de-google-slides-para-ser-un-maestro-de-las-presentaciones>