[out:xml][timeout:3600]; ( node(150939823)['wikipedia'='en:Cairns Corner, California']; ); (._;>;); out meta qt;//['wikipedia tag links to 404']
[out:xml][timeout:3600]; ( node(10936411796)['wikipedia'='en:United States Postal Service']; ); (._;>;); out meta qt;//['blacklisted connection with known replacement']
[out:xml][timeout:3600]; ( node(9345267826)['brand:wikidata'='Q37158']['not:brand:wikidata'='Q37158']; ); (._;>;); 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.