[out:xml][timeout:3600]; ( relation(13164896)['wikidata'='Q122828053']['wikipedia'='de:Bahnstrecke Gotteszell–Blaibach']; way(485026630)['wikidata'='Q41407788']['wikipedia'='de:Liste der Baudenkmäler in Pemfling']; ); (._;>;); out meta qt;//['wikipedia wikidata mismatch']
[out:xml][timeout:3600]; ( node(4235134309)['operator:wikidata'='Q1152124']['operator:wikipedia'='de:Deutsche Bahn']; way(82763143)['operator:wikidata'='Q1662830']['operator:wikipedia'='de:Tennet Holding']; ); (._;>;); out meta qt;//['wikipedia wikidata mismatch - for operator prefixed tags']
JOSM Wikipedia plugin
Note to self: online version hosted at https://matkoniecz.github.io/OSM-wikipedia-tag-validator-reports, files are stored at https://github.com/matkoniecz/OSM-wikipedia-tag-validator-reports.