<https://theburningmonk.com/2012/07/what-does-this-f-code-look-like-in-erlang-part-4-of-n/#article>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://theburningmonk.com/2012/07/what-does-this-f-code-look-like-in-erlang-part-4-of-n/>