おうぶくろむささびでわありませんでした
大袋鼯鼠ではありませんでした
ōbuku romusasabidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of おおふくろももんが

1. Was not a sugar glider.; Was not a large-eared flying squirrel.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana