<https://viettimes.vn/robot-giao-duc-se-cung-hoc-sinh-tham-gia-trai-he-cong-nghe-2019-post101198.html>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://m.viettimes.vn/robot-giao-duc-se-cung-hoc-sinh-tham-gia-trai-he-cong-nghe-2019-post101198.html>