<https://forum.orioleshangout.com/topic/12564-keith-law-takes-another-shot-at-the-os/#comment-846194>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://forum.orioleshangout.com/topic/12564-keith-law-takes-another-shot-at-the-os/>