なぞなぞじゃありませんでした
謎々じゃありませんでした
nazonazojārimasendeshita

Noun
Desu Copula

The polite, past negative form of なぞなぞ

1. It wasn't a riddle.; It wasn't a puzzle.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana