<https://mail.saenco.com/1391-09-19-09-58-35/1392-05-01-08-02-49/98873.html>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://mail.saenco.com/1391-09-19-09-58-35/1392-05-01-08-02-49/98873.html>