原発 げんぱつ不明 ふめいがんじゃなかったです
gempatsu fumei ganjanakattadesu

Noun
Desu Copula

The polite, past negative form of 原発不明がん

1. Wasn't primary cancer.; Wasn't cancer of unknown origin.

Past/Perfective
Negative
Polite
Casual Register
Medicine