開発 かいはつ基本 きほん せんじゃありませんでした
kaihatsukihonsenjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 開発基本線

1. Was not the basic development line.; It wasn't the basic development line.

Past/Perfective
Negative
Polite
Terminal Form
Computing