<https://enlight.bg/kurzgesagt-in-a-nutshell/\u043E\u043A\u0435\u0430\u043D\u0441\u043A\u043E\u0442\u043E-\u0442\u0435\u0447\u0435\u043D\u0438\u0435-\u0433\u044A\u043B\u0444\u0441\u0442\u0440\u0438\u0439\u043C/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://enlight.bg/kurzgesagt-in-a-nutshell/%D0%BE%D0%BA%D0%B5%D0%B0%D0%BD%D1%81%D0%BA%D0%BE%D1%82%D0%BE-%D1%82%D0%B5%D1%87%D0%B5%D0%BD%D0%B8%D0%B5-%D0%B3%D1%8A%D0%BB%D1%84%D1%81%D1%82%D1%80%D0%B8%D0%B9%D0%BC/>