だい規模 きぼ災害 さいがいじゃなかったです
daikibosaigaijanakattadesu

Noun
Desu Copula

The polite, past negative form of 大規模災害

1. It wasn't a large-scale disaster.; It hadn't been a large-scale disaster.

Past/Perfective
Negative
Polite
Casual Register