開放 かいほう がた文書 ぶんしょ体系 たいけいじゃありませんでした
kaihōga tabun shota ikeijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 開放型文書体系

1. Was not an open document system.; Was not an open-source document system.

Past/Perfective
Negative
Polite
Terminal Form
Computing