重厚じゅうこう長大ちょうだい産業さんぎょうじゃなかったです
jūkōchōdaisangyōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 重厚長大産業

1. Wasn't a heavy/major industry.; Wasn't a large-scale industry.

Past/Perfective
Negative
Polite
Casual Register