反省 はんせい材料 ざいりょうではありませんでした
hanseizairyōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 反省材料

1. Was not a reflection/report (of self-criticism).; Was not material for self-reflection.

Past/Perfective
Negative
Polite
Formal Register