拡張 かくちょう ゆう いう えふではありませんでした
kakuchō yūiu efudewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 拡張UEF

1. Was not an extended UE.; Was not a UE extension.

Past/Perfective
Negative
Polite
Formal Register
Computing