原油 げんゆ流出 りゅうしゅつではありませんでした
gen'yuryūshutsudewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 原油流出

1. Was not crude oil leakage.; Was not an oil spill.

Past/Perfective
Negative
Polite
Formal Register