天変 てんぺん 異説 いせつじゃなかったです
tempenchiisetsujanakattadesu

Noun
Desu Copula

The polite, past negative form of 天変地異説

1. It wasn't a theory of cataclysm.; It wasn't the cataclysm theory.

Past/Perfective
Negative
Polite
Casual Register