真相 しんそう究明 きゅうめい委員 いいん かいじゃありませんでした
shinsōkyūmei ii n kaija arimasendeshita

Noun
Desu Copula

The polite, past negative form of 真相究明委員会

1. Was not the truth investigation committee.; Was not a truth-investigating committee.

Past/Perfective
Negative
Polite
Terminal Form