せいようはこやなぎでわありません
西洋箱柳ではありません
seiyōhakoyanagidewārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of せいようはこやなぎ

1. Not a willow in a Western box.; Not that.

Negative
Polite
Formal Register
Usually Written in Kana