頭脳 ずのう労働 ろうどうじゃありませんでした
zunōrōdōjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 頭脳労働

1. Was not mental work.; Was not intellectual labor.; Was not brain work.

Past/Perfective
Negative
Polite
Terminal Form