<https://ralearn.com/#/schema/person/20f8e9e9a9ae0192921955ce47bd1f6e>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/Person>
<https://ralearn.com/how-to-create-login-signup-form-with-source-code/>