OSM tag name=横津岳 matches 横津岳 in these Wikidata fields:
OSM tag name:en=Yokotsu Dake matches Yokotsu-dake in these Wikidata fields:
OSM tag name:ja_rm=Yokotsu Dake matches Yokotsu-dake in these Wikidata fields:
OSM tag name:ja_kana=よこつだけ matches Yokotsu-dake in these Wikidata fields: