[out:xml][timeout:3600]; ( way(25820261)['wikipedia'='de:Justizvollzugsanstalt Willich']; ); (._;>;); out meta qt;//['link to a disambiguation page']
[out:xml][timeout:3600]; ( relation(13664222)['wikidata'='Q19838755']['wikipedia'='de:Krefelder Eisenbahn-Gesellschaft']; ); (._;>;); out meta qt;//['wikipedia wikidata mismatch']
[out:xml][timeout:3600]; ( relation(4804718)['wikidata'='Q1243995']['wikipedia'='de:Dorfer Bach']; ); (._;>;); out meta qt;//['wikipedia wikidata mismatch - wikipedia points to disambiguation page and wikidata does not']
[out:xml][timeout:3600]; ( relation(1443834)['network:wikidata'='Q448199']['not:network:wikidata'='Q448199']; ); (._;>;); out meta qt;//['wikipedia/wikidata type tag that is incorrect according to not:* tag']
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.