<https://secure.gravatar.com/avatar/59dfd859745f46ba780329a2c9558103?s=96&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://thegreenvoyage.com/nl/gewoonten-om-te-laten-varen-voor-een-gelukkiger-reis/>