地球 ちきゅう てき問題 もんだいじゃなかったです
chikyūteki mondaijanakattadesu

Noun
Desu Copula

The polite, past negative form of 地球的問題

1. It wasn't the Earth's problem.; It wasn't a problem with the Earth.

Past/Perfective
Negative
Polite
Casual Register