びわこおうなまずでわありません
琵琶湖大鯰ではありません
biwako ō namazudewārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of びわこおおなまず

1. Not the great catfish of Lake Biwa.

Negative
Polite
Formal Register
Usually Written in Kana