爆弾 ばくだん宣言 せんげんではありませんでした
bakudansengendewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 爆弾宣言

1. It was not a bombastic declaration.; It wasn't a bombshell announcement.

Past/Perfective
Negative
Polite
Formal Register