たん時間 じかん睡眠 すいみん しゃではありませんでした
tanjikan suiminshadewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 短時間睡眠者

1. Was not a short sleeper.; Was not someone who needed little sleep.

Past/Perfective
Negative
Polite
Formal Register