<https://simplymaya.com//forum/showthread.php?s=31f2d99493cc5cf21eac79b20f8fd6b9&t=33420>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://simplymaya.com/forum/showthread.php?s=31f2d99493cc5cf21eac79b20f8fd6b9&t=33420>