<https://secure.gravatar.com/avatar/54c0cadee92af4ba4fe2c60ba1aca0cb?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://edugo.vn/du-hoc/giang-sinh-o-nuoc-duc-tin-tuc-du-hoc-nghe/>