貞観 じょうがん時代 じだいじゃありませんでした
jōgan jidaijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 貞観時代

1. Was not the Heian period.; Was not during the Jōgan era.

Past/Perfective
Negative
Polite
Terminal Form