蝦夷 えぞ法螺 ぼらではありませんでした
giezo boradewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 擬蝦夷法螺

1. Was not a false Ezo conch.; Was not an imitation Ezo conch.

Past/Perfective
Negative
Polite
Formal Register