かく兵器 へいき禁止 きんし条約 じょうやくじゃありませんでした
kakuheikikinshijōyakujārimasendeshita

Noun
Desu Copula

The polite, past negative form of 核兵器禁止条約

1. It was not the Nuclear Non-Proliferation Treaty.; It wasn't the treaty prohibiting nuclear weapons.

Past/Perfective
Negative
Polite
Terminal Form