<https://blog.tito.io/posts/tito-in-2013-a-look-back-and-a-quick-look-forward/#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blog.tito.io/posts/tito-in-2013-a-look-back-and-a-quick-look-forward/>