<https://community.lametayel.co.il/topic/157122/\u05D4\u05D0\u05D8\u05D4-\u05D1\u05EA\u05D9\u05D9\u05E8\u05D5\u05EA>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://community.lametayel.co.il/topic/157122/%D7%94%D7%90%D7%98%D7%94-%D7%91%D7%AA%D7%99%D7%99%D7%A8%D7%95%D7%AA/128>