高等 こうとう商業 しょうぎょう学校 がっこうでしょう
kōtōshōgyōgakkōdeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 高等商業学校

1. Probably a higher commercial school.; Possibly a higher commercial school.

Polite
Presumptive
Conjecture