<https://mybooket.com/author/1918415/%D8%AF%DA%A9%D8%AA%D8%B1-%D8%B1%D8%B6%D8%A7-%D9%85%D8%AE%D8%AA%D8%A7%D8%B1%DB%8C>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://mybooket.com/books/44337f76fb8a928e/%D8%AC%D8%A8%D8%B1-%D8%AE%D8%B7%DB%8C-%D8%B9%D8%AF%D8%AF%DB%8C>