<https://www.pierre-franckh.de/#website>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.pierre-franckh.de/vortraege-seminare-4/?ma=pierre-franckh-michael-goerden-michaela-merten&termcat=vortraege&region=M%C3%BCnchen&show=grid&date=next-4-week>