<https://ffmuc.net/wiki/doku.php?id=knb:start>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://ffmuc.net/wiki/doku.php?id=knb:start&ns=photos&tab_files=files&do=media&tab_details=view&image=projekte%3Arn_image_picker_lib_temp_2d361ba3-c4ba-41dc-9616-83a32c8b4a80.jpg>