<https://jref.com/threads/where-do-i-start-and-how-do-i-approach-rtk-1.182389/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://jref.com/threads/where-do-i-start-and-how-do-i-approach-rtk-1.182389/>