昭和しょうわ元禄げんろくじゃありませんでした
shōwagenrokujārimasendeshita

Noun
Desu Copula

The polite, past negative form of 昭和元禄

1. It was not the Showa era.; It wasn't the Genroku era.

Past/Perfective
Negative
Polite
Terminal Form