民間 みんかん調査 ちょうさ機関 きかんではありませんでした
minkanchōsakikandewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 民間調査機関

1. Was not a private investigation agency.; Was not a civilian research institution.

Past/Perfective
Negative
Polite
Formal Register