くろあしあほうどりじゃありませんでした
黒足信天翁じゃありませんでした
kuroashiahōdorijārimasendeshita

Noun
Desu Copula

The polite, past negative form of くろあしあほうどり

1. Was not a black-footed albatross.; Was not a wandering albatross.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana