SGML えすじいえむえるデータ実体 じったいじゃなかったです
hiesu jii emueru dētajittaijanakattadesu

Noun
Desu Copula

The polite, past negative form of 非SGMLデータ実体

1. Was not a non-SGML data entity.; Wasn't a non-SGML data entity.

Past/Perfective
Negative
Polite
Casual Register
Computing