<https://secure.gravatar.com/avatar/0bf65c0d7c097b0772a74d06b64ab3c5?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.summithosting.com/blog/server-resources-explained/>