<https://secure.gravatar.com/avatar/1def2f02b251eb72aba70d26b17c16de?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://nursingassignmentshelp.net/2021/05/26/urgent-homework-help-1833/>