黒田 くろだ売買 ばいばいではありませんでした
kuroda baibaidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 黒田売買

1. It was not Kuroda buying and selling.; It was not a Kuroda transaction.

Past/Perfective
Negative
Polite
Formal Register