<https://data.woerthersee.com/api/v4/universal/e68f4914-8ca9-4d28-915d-d58a19aac029>
<http://schema.org/minValue>
"0"^^<http://www.w3.org/2001/XMLSchema#integer>
<https://www.woerthersee.com/dc-neu/detail/Veranstaltung/einfuehrungs-matinee-tosca>