せきとりいわしじゃなかったです
関取鰮じゃなかったです
sekitoriiwashijanakattadesu

Noun
Desu Copula

The polite, past negative form of せきとりいわし

1. Wasn't a sumo wrestler.; Wasn't a horse mackerel.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana