朝鮮 ちょうせん やま赤蛙 あかがえるじゃなかったです
chōsen'ya mākaga erujanakattadesu

Noun
Desu Copula

The polite, past negative form of 朝鮮山赤蛙

1. Was not a Korean mountain red frog.; Wasn't a Korean mountain red frog.

Past/Perfective
Negative
Polite
Casual Register