<https://forum.wacken.com/threads/running-order-update-running-order-tool-bandbestaetigungen.226867/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/WebPage>
<https://forum.wacken.com/threads/running-order-update-running-order-tool-bandbestaetigungen.226867/page-15#post-13207285>