<https://www.alldeaf.com/threads/i-accept-the-challenge-to-take-as-much-questions-as-much-as-possible.2521/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.alldeaf.com/threads/i-accept-the-challenge-to-take-as-much-questions-as-much-as-possible.2521/#post-68170>