下層 かそう階級 かいきゅうじゃありませんでした
ka sō kaikyūjārimasendeshita

Noun
Desu Copula
no-Adjective

The polite, past negative form of 下層階級

1. Was not lower class.; Was not of the lower class.; Was not from a lower social stratum.

Past/Perfective
Negative
Polite
Terminal Form