いなせでわありませんでした
鯔背ではありませんでした
inasedewārimasendeshita

Desu Copula
na-Adjective

The polite, past negative form of いなせ

1. Was not a flatfish.; Was not having a flat back.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana