<https://alluwant.life/cach-luyen-dich-doc-hieu-tieng-anh-tu-chua-biet-gi/#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://alluwant.life/cach-luyen-dich-doc-hieu-tieng-anh-tu-chua-biet-gi/>