文書 ぶんしょ がた宣言 せんげん部分 ぶぶん集合 しゅうごうでしょう
bunshogata sengembubunshūgōdeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 文書型宣言部分集合

1. Probably a document-type declaration subset.

Polite
Presumptive
Conjecture
Computing