文脈 ぶんみゃく自由 じゆう言語 げんごではありませんでした
bummyaku jiyū gengodewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 文脈自由言語

1. Was not context-free language.; Was not a context-free language.

Past/Perfective
Negative
Polite
Formal Register