南海 なんかいトラフ地震 じしんじゃありませんでした
nankaitorafujishinjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 南海トラフ地震

1. Was not the Nankai Trough earthquake.; It wasn't the Nankai Trough earthquake.

Past/Perfective
Negative
Polite
Terminal Form