壁越 かべご推量 ずいりょうではありませんでした
kabe goshizu iryōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 壁越し推量

1. It was not conjecture.; It was not guesswork.; It was not speculation.

Past/Perfective
Negative
Polite
Formal Register