さん人称 にんしょう だい名詞 めいしじゃなかったです
sannin shōdaimeishijanakattadesu

Noun
Desu Copula

The polite, past negative form of 三人称代名詞

1. Wasn't it (he/she/they); Wasn't that person

Past/Perfective
Negative
Polite
Casual Register
Linguistics