大量 たいりょう虐殺 ぎゃくさつじゃなかったです
tairyōgyakusatsujanakattadesu

Noun
Desu Copula

The polite, past negative form of 大量虐殺

1. Wasn't a massacre.; Wasn't mass slaughter.

Past/Perfective
Negative
Polite
Casual Register