雌雄 しゆう鑑別 かんべつではありませんでした
shiyūkambetsudewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 雌雄鑑別

1. Was not able to distinguish between male and female.; Was not discerning of sex.

Past/Perfective
Negative
Polite
Formal Register