<https://secure.gravatar.com/avatar/7f0dbc342e0416bf1717200da654a851?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://voortoptiek.nl/instrumenten/fundus-camera/crystalvue-nfc-700/>