exact match delivers non-exact values?
How do we define "exact-match"?
For https://ref.de.dariah.eu/tgn/v1/exact-match?q=mainz&georef=true is also delivering
<match_name>Hauptbahnhof Mainz</match_name> Wüste Mark Mainz Mainz-Kastel
...etcpp.
Bug or feature?