有機 ゆうき汚染 おせん物質 ぶっしつじゃなかったです
yūkiosembusshitsujanakattadesu

Noun
Desu Copula

The polite, past negative form of 有機汚染物質

1. Wasn't organic pollutants.; Wasn't an organic pollutant.

Past/Perfective
Negative
Polite
Casual Register