仕掛 しか爆弾 ばくだんではありませんでした
shikakebakudandewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 仕掛け爆弾

1. Was not a trap.; Was not a setup.; Was not rigged.

Past/Perfective
Negative
Polite
Formal Register