教師 きょうしなし学習 がくしゅうじゃありませんでした
kyōshi nashiga kushūjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 教師なし学習

1. Was not self-teaching.; Was not learning without a teacher.

Past/Perfective
Negative
Polite
Terminal Form
Computing