<https://community.weltenbastler.net/forum/index.php?thread/3734-ringcheck-und-rundreisen/&amp;pageNo=17>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://community.weltenbastler.net/forum/index.php?thread/3734-ringcheck-und-rundreisen/&postID=381621>