つしまやまねこでわありませんでした
対馬山猫ではありませんでした
tsushimayamanekodewārimasendeshita

Noun
Desu Copula

The polite, past negative form of つしまやまねこ

1. Was not a Tsushima mountain cat.; Was not a Tsushima wildcat.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana