<https://cookingsecrets.net/2018/12/24/%d9%85%d9%83%d8%b1%d9%88%d9%86%d8%a9-%d8%a8%d8%a7%d9%84%d8%a8%d8%b4%d8%a7%d9%85%d9%8a%d9%84-%d9%88%d8%a7%d9%84%d8%aa%d9%88%d9%86%d8%a9/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://cookingsecrets.net/2018/12/24/%D9%85%D9%83%D8%B1%D9%88%D9%86%D8%A9-%D8%A8%D8%A7%D9%84%D8%A8%D8%B4%D8%A7%D9%85%D9%8A%D9%84-%D9%88%D8%A7%D9%84%D8%AA%D9%88%D9%86%D8%A9/>