<http://blog.rafihecht.com/2016/11/28/8-nursery-rhymes-with-dark-origins.html#breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blog.rafihecht.com/2016/11/28/8-nursery-rhymes-with-dark-origins.html>