<https://forum.toolsinaction.com/topic/8283-what-tools-did-you-buy-today/page/331/#comment-203258>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://forum.toolsinaction.com/topic/8283-what-tools-did-you-buy-today/page/331/?tab=comments#comment-203838>