<https://marbleconnection.com/topic/28022-shades-of-purple-mk-vitro/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/DiscussionForumPosting>
<https://marbleconnection.com/topic/28022-shades-of-purple-mk-vitro/>