<https://www.crxcommunity.com/threads/those-who-like-paintballing-and-p-90s-some-cad-stuff.1431/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.crxcommunity.com/threads/those-who-like-paintballing-and-p-90s-some-cad-stuff.1431/>