<https://secure.gravatar.com/avatar/01e2fa29217d3f7478dd5269ea91fe9b?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://bedalil.com/%D9%85%D8%AC%D9%85%D9%88%D8%B9%D8%A9-%D8%B4%D8%AA%D8%A7%D8%AA/>