<https://secure.gravatar.com/avatar/652780c588e5da356454ffe254e989f2?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://smartblog91.com/web-stories/how-does-nifty-50-work-today/>