<https://secure.gravatar.com/avatar/4a9e582e811228aac2891ecb89d7ce94?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.thecollienois.com/stimulate-your-dogs-brain-mental-stimulation/>