[out:xml][timeout:3600]; ( node(10810822509)['wikidata'='Q116291521']; ); (._;>;); out meta qt;//['should use a secondary wikipedia tag - linking from wikipedia and wikidata tag to a human']
[out:xml][timeout:3600]; ( relation(14706842)['network:wikidata'='Q2516466']['not:network:wikidata'='Q2516466']; ); (._;>;); out meta qt;//['wikipedia/wikidata type tag that is incorrect according to not:* tag']
[out:xml][timeout:3600]; ( node(4939726862)['fixme:wikipedia'='de:Liste der Stolpersteine in Kitzingen']; node(4939726863)['fixme:wikipedia'='de:Liste der Stolpersteine in Kitzingen']; node(4940093865)['fixme:wikipedia'='de:Liste der Stolpersteine in Kitzingen']; ); (._;>;); out meta qt;//['something is wrong with wikipedia tag - fixme:wikipedia is present']
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.