すわまそうじゃなかったです
州浜草じゃなかったです
suwamasōjanakattadesu

Noun
Desu Copula

The polite, past negative form of すはまそう

1. Wasn't a state beach.; Wasn't a provincial beach.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana