<https://www.mtb-news.de/forum/t/wo-bin-ich-bilderraetsel-sachsen.500799/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.mtb-news.de/forum/t/wo-bin-ich-bilderraetsel-sachsen.500799/page-345#post-17544863>