<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/Organization>
<http://www.farahat-library.com/blog/2010/11/%D8%A7%D8%AD%D8%AA%D8%B1%D9%81-%D8%B3%D9%8A%D9%86%D9%85%D8%A7-%D9%81%D9%88%D8%B1-%D8%AF%D9%8A-%D9%85%D8%B9-%D9%87%D8%B0%D9%8A%D9%86-%D8%A7%D9%84%D9%83%D8%AA%D8%A7%D8%A8%D9%8A%D9%86/>