救命 きゅうめい浮標 ふひょうではありませんでした
kyūmeifuhyōdewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 救命浮標

1. Was not a lifebuoy.; Was not a life ring.

Past/Perfective
Negative
Polite
Formal Register