宣言 せんげん 具象 ぐしょう構文 こうぶんじゃないです
sengenzumi gushō kōbunjanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 宣言済み具象構文

1. It's not a declared concrete syntax.

Negative
Polite
Casual Register
Computing