核相 かくそう交代 こうたいじゃありませんでした
kaku sō kōtaijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 核相交代

1. It wasn't a matter of checking family registers.; It wasn't a formal introduction of families.

Past/Perfective
Negative
Polite
Terminal Form