<https://khmernas.com/archives/tag/%e1%9e%91%e1%9f%86%e1%9e%93%e1%9e%b7%e1%9e%89%e1%9e%80%e1%9f%92%e1%9e%9b%e1%9f%82%e1%9e%84%e1%9e%80%e1%9f%92%e1%9e%9b%e1%9e%b6%e1%9e%99>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://khmernas.com/archives/tag/%E1%9E%91%E1%9F%86%E1%9E%93%E1%9E%B7%E1%9E%89%E1%9E%80%E1%9F%92%E1%9E%9B%E1%9F%82%E1%9E%84%E1%9E%80%E1%9F%92%E1%9E%9B%E1%9E%B6%E1%9E%99>