河鹿蛙 かじかがえるではありませんでした
kajikagaerudewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 河鹿蛙

1. Was not a river deer frog.; Was not a river, deer, or frog.

Past/Perfective
Negative
Polite
Formal Register