<https://forum.pinkun.com/index.php?/topic/93310-chris-hughtons-use-of-substitions/#comment-1372891>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/Comment>
<https://forum.pinkun.com/index.php?/topic/93310-chris-hughtons-use-of-substitions/>