<http://www.flytyingforum.com/index.php?/topic/64826-happy-birthday-dart/#comment-495393>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://www.flytyingforum.com/index.php?/topic/64826-happy-birthday-dart/&tab=comments#comment-494205>