<https://www.filgoal.com/articles/258855>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.filgoal.com/articles/258855/%D9%81%D9%8A-%D8%A7%D9%84%D9%83%D9%84%D8%A7%D8%B3%D9%8A%D9%83%D9%88-%D8%AC%D9%88%D8%AA%D9%8A-%D9%84%D8%A8%D8%B1%D8%B4%D9%84%D9%88%D9%86%D8%A9-%D8%B9%D8%A7%D9%8A%D8%B2%D9%8A%D9%86-%D8%A5%D9%8A%D9%87-%D8%AA%D8%A7%D9%86%D9%8A>