<https://doppelpack.org/#website>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://doppelpack.org/wer-wir-sind/termine?format=calendar&yr=2021&month=8&dy&cid=mc-eebc9a21598585f5d8bea2ab08144d58&mcat=10,7,9>