原発 げんぱつ不明 ふめいがんじゃありませんでした
gempatsu fumeiganja arimasendeshita

Noun
Desu Copula

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

1. It was not cancer of unknown primary.; It wasn't cancer with an unknown origin.

Past/Perfective
Negative
Polite
Terminal Form
Medicine