きょはぜでわありませんでした
虚鯊ではありませんでした
kyohazedewārimasendeshita

Noun
Desu Copula

The polite, past negative form of うろはぜ

1. Was not a false shark.; Was not a fake shark.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana