<https://secure.gravatar.com/avatar/c30b09b43c4d8798121517b024690acd?s=96&amp;d=monsterid&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://fernwehblog.net/kreuzfahrt-11-tipps-fuer-anfaenger/>