はくじらでわありませんでした
歯鯨ではありませんでした
hakujiradewārimasendeshita

Noun
Desu Copula

The polite, past negative form of はくじら

1. Was not a toothed whale.; Was not a denticete.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana