おがさわらだいこうもりじゃなかったです
小笠原大蝙蝠じゃなかったです
ogasawaradaikōmorijanakattadesu

Noun
Desu Copula

The polite, past negative form of おがさわらおおこうもり

1. Was not Ogawara's large bat.; Wasn't the Ogawara bat.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana