<https://blog.code4u.org/screenshot_2020-11-03-test-is-requesting-permission-to-access-the-technoledge-slack-workspace-technoledge-slack>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blog.code4u.org/screenshot_2020-11-03-test-is-requesting-permission-to-access-the-technoledge-slack-workspace-technoledge-slack>