相手 あいて かた当事 とうじ しゃじゃなかったです
aiteka tatōjishajanakattadesu

Noun
Desu Copula

The polite, past negative form of 相手方当事者

1. Wasn't the other party.; Wasn't the opposing party.; Wasn't the other person involved.

Past/Perfective
Negative
Polite
Casual Register