ボノボではありませんでした
bonobodewārimasendeshita

Noun
Desu Copula

The polite, past negative form of ボノボ

1. Was not a bonobo.; Was not a chimpanzee. (Depending on context, "bonobo" can broadly refer to any ape.)

Past/Perfective
Negative
Polite
Formal Register