<https://yarl.com/forum3/#organization>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://yarl.com/forum3/topic/198821-%E0%AE%AE%E0%AE%A4%E0%AF%81%E0%AE%B0%E0%AF%88-%E0%AE%AE%E0%AE%BE%E0%AE%A8%E0%AE%95%E0%AE%B0%E0%AE%AE%E0%AF%8D/>