懸賞 けんしょう論文 ろんぶんじゃなかったです
kenshōrombunjanakattadesu

Noun
Desu Copula

The polite, past negative form of 懸賞論文

1. Wasn't a prize-winning paper.; Wasn't an award-winning essay.

Past/Perfective
Negative
Polite
Casual Register