ようはいじゃなかったです
洋杯じゃなかったです
yōhai ja nakattadesu

Noun
Desu Copula

The polite, past negative form of コップ

1. It wasn't a glass.; It wasn't a western-style cup.

Past/Perfective
Negative
Polite
Casual Register
Card Games
Usually Written in Kana