機能 きのう単一 たんいつ 文法 ぶんぽうでしょう
kinō tan'itsuka bumpōdeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 機能単一化文法

1. Probably functional unification grammar.

Polite
Presumptive
Conjecture
Linguistics