<https://mbstateofmind.com/2019/09/29/sunday-session-9-22-19/attachment/13243/#itempage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://mbstateofmind.com/2019/09/29/sunday-session-9-22-19/attachment/13243/>