<https://movilforum.com/porque-no-se-envian-fotos-hd-por-whatsapp/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://movilforum.com/de/Warum-werden-HD-Fotos-nicht-%C3%BCber-WhatsApp-versendet%3F/>