<https://community.fiverr.com/forums/topic/258758-first-order-complete/page/4/#comment-1596667>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://community.fiverr.com/forums/topic/258758-first-order-complete/page/4/?tab=comments#comment-1597544>