ドーナツ 現象 げんしょうではありませんでした
dōnatsuka genshōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of ドーナツ化現象

1. It was not donutification.; It wasn't becoming like a donut.

Past/Perfective
Negative
Polite
Formal Register