人口 じんこう統計 とうけい がく しゃじゃなかったです
jinkōtōkeigakushajanakattadesu

Noun
Desu Copula

The polite, past negative form of 人口統計学者

1. Was not a demographer.; Was not a statistician.

Past/Perfective
Negative
Polite
Casual Register