文化 ぶんか けん固有 こゆう動作 どうさでしょう
bunkakenkoyūdōsadeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 文化圏固有動作

1. Likely a cultural practice.; Probably specific to that culture.

Polite
Presumptive
Conjecture
Computing