しつあじでわありませんでした
室鯵ではありませんでした
shitsuajidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of むろあじ

1. Was not a horse mackerel.; Was not a Pacific herring.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana