<https://secure.gravatar.com/avatar/4c74012a7550cdd57aca92fe0f88faea?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://coinsprobe.com/web-stories/what-is-web-3-0-a-beginners-guide/>