自然 しぜん ぶん検索 けんさくじゃなかったです
shizen bunkensakujanakattadesu

Noun
Desu Copula

The polite, past negative form of 自然文検索

1. Wasn't natural language processing.; Wasn't a natural language search.

Past/Perfective
Negative
Polite
Casual Register
Computing