<https://espaceacademy.com/#/schema/person/db2d621d093c470d1723bd6bc41400b5>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://espaceacademy.com/2018/03/06/how-were-the-african-empires-of-kush-and-aksum-different-from-later-empires-in-africa-10/>