永久 えうきゅう磁石 じしゃくじゃありませんでした
eukyūjishakujārimasendeshita

Noun
Desu Copula

The polite, past negative form of 永久磁石

1. Was not a permanent magnet.; Was not a permanent magnet. (polite)

Past/Perfective
Negative
Polite
Terminal Form