<https://blog.parpareem.com/%d7%a7%d7%a9%d7%99%d7%99%d7%9d-%d7%91%d7%96%d7%95%d7%92%d7%99%d7%95%d7%aa-%d7%97%d7%9c%d7%95%d7%9e%d7%95%d7%aa-%d7%9e%d7%a8%d7%9e%d7%96%d7%99%d7%9d-%d7%a2%d7%9c-%d7%a7%d7%a9%d7%99%d7%99%d7%9d-%d7%91/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blog.parpareem.com/tag/%D7%9E%D7%A9%D7%91%D7%A8%D7%99%D7%9D-%D7%91%D7%96%D7%95%D7%92%D7%99%D7%95%D7%AA/>