蝦夷 えぞ なる ではありませんでした
ezo narutodewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 蝦夷鳴兎

1. Was not a Hokkaido hare.; Was not an Ezo hare.

Past/Perfective
Negative
Polite
Formal Register