てい周波 しゅうは公害 こうがいではありませんでした
te ishūwa kō gaidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 低周波公害

1. Was not low-frequency noise pollution.; Was not low-frequency public nuisance.

Past/Perfective
Negative
Polite
Formal Register