特徴 とくちょう抽出 ちゅうしゅつじゃなかったです
tokuchōchūshutsujanakattadesu

Noun
Desu Copula

The polite, past negative form of 特徴抽出

1. Was not feature extraction.; Wasn't characterizing.

Past/Perfective
Negative
Polite
Casual Register