[out:xml][timeout:3600]; ( way(325096114)['wikidata'='Q1621199']['wikipedia'='en:Poplar River (Montana–Saskatchewan)']; ); (._;>;); out meta qt;//['wikipedia wikidata mismatch']
[out:xml][timeout:3600]; ( node(357979922)['information'='board']['wikidata'='Q49502171']; ); (._;>;); out meta qt;//['information board with wikidata tag, not subject:wikidata']
[out:xml][timeout:3600]; ( way(339253046)['wikidata'='Q739084']['wikipedia'='en:U.S. Bancorp']; ); (._;>;); out meta qt;//['blacklisted connection with known replacement']
[out:xml][timeout:3600]; ( way(335653106)['operator:wikidata'='Q7642102']['operator:wikipedia'='en:Brookshire Grocery Company']; ); (._;>;); out meta qt;//['wikipedia wikidata mismatch - for operator prefixed tags']
[out:xml][timeout:3600]; ( node(357964398)['wikidata'='Q49483315']['wikipedia'='ceb:Dinosaurs Historical Marker']; node(369148577)['wikidata'='Q49746899']['wikipedia'='ceb:Hoolie Airport']; ); (._;>;); out meta qt;//['wikipedia tag links bot wikipedia']
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.