文書 ぶんしょ がた宣言 せんげん部分 ぶぶん集合 しゅうごうじゃありませんでした
bunshogata sengembubunshūgōjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 文書型宣言部分集合

1. Was not a document-type declaration subset.; Was not a set of document-type declarations.

Past/Perfective
Negative
Polite
Terminal Form
Computing