木質 もくしつ繊維 せんいではありませんでした
mokushitsusen'idewārimasendeshita

Noun
Desu Copula
no-Adjective

The polite, past negative form of 木質繊維

1. Was not woody fiber.; Was not made of wood fiber.

Past/Perfective
Negative
Polite
Formal Register