爆弾 ばくだん発表 はっぴょうではありませんでした
bakudanhappyōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 爆弾発表

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

Past/Perfective
Negative
Polite
Formal Register