本人 ほんにん訴訟 そしょうではありませんでした
honninsoshōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 本人訴訟

1. It was not a plaintiff's suit.; It was not a self-representation.

Past/Perfective
Negative
Polite
Formal Register