おうみずなぎとりじゃありませんでした
大水薙鳥じゃありませんでした
ō mizunagitorijārimasendeshita

Noun
Desu Copula

The polite, past negative form of おおみずなぎどり

1. Was not a frigatebird.; Was not a large water bird.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana