おうさがでわありませんでした
大佐賀ではありませんでした
ōsagadewārimasendeshita

Noun
Desu Copula

The polite, past negative form of おおさが

1. Was not a great success.; Was not a big deal.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana