消灯 しょうとうラッパじゃありませんでした
shōtōrappajārimasendeshita

Noun
Desu Copula

The polite, past negative form of 消灯ラッパ

1. Wasn't the lights-out bugle.; Wasn't the signal to extinguish the lights.

Past/Perfective
Negative
Polite
Terminal Form