<https://arabiansforum.net/archives/tag/%d8%a7%d9%84%d8%b3%d9%84%d8%a7%d9%85#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://arabiansforum.net/archives/tag/%D8%A7%D9%84%D8%B3%D9%84%D8%A7%D9%85>