植物 しょくぶつ せい繊維 せんいじゃありませんでした
shokubutsuseisen ija arimasendeshita

Noun
Desu Copula

The polite, past negative form of 植物性繊維

1. It was not plant-based fiber.; It wasn't plant fiber.

Past/Perfective
Negative
Polite
Terminal Form