<https://secure.gravatar.com/avatar/1933a948e87b71ca7188d446b9871c8b?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://alsaydaliah.com/2018/10/%D9%83%D9%8A%D9%86%D8%A7%D9%83%D9%88%D9%85%D8%A8-%D9%85%D8%B1%D9%87%D9%85-%D8%B9%D9%84%D8%A7%D8%AC-%D8%A7%D9%84%D8%AA%D9%8A%D9%86%D9%8A%D8%A7-%D9%88%D8%AD%D9%83%D8%A9-%D8%A7%D9%84%D8%AC%D9%84%D8%AF/>