しなはまぐりじゃなかったです
支那蛤じゃなかったです
shinahamagurijanakattadesu

Noun
Desu Copula

The polite, past negative form of しなはまぐり

1. Wasn't China.; Wasn't a toad.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana