すずめのてっぽうじゃありませんでした
雀の鉄砲じゃありませんでした
suzumeno teppōjārimasendeshita

Noun
Desu Copula

The polite, past negative form of すずめのてっぽう

1. It wasn't a sparrow's blunderbuss.; It wasn't a trivial matter.

Past/Perfective
Negative
Polite
Terminal Form
Usually Written in Kana