白馬 しろうま尖鼠 とがりねずみじゃなかったです
shirōma togarinezumijanakattadesu

Noun
Desu Copula

The polite, past negative form of 白馬尖鼠

1. Wasn't a white horse-tipped rat.

Past/Perfective
Negative
Polite
Casual Register