<https://akademija.icthub.rs/2014/10/10/design-is-not-how-things-looks-but-how-things-work/#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://akademija.icthub.rs/2014/10/10/design-is-not-how-things-looks-but-how-things-work/>