地震 じしん空白 くうはく いきじゃなかったです
jishinkūhakuikijanakattadesu

Noun
Desu Copula

The polite, past negative form of 地震空白域

1. Wasn't a seismic gap.; Wasn't an area of seismic inactivity.

Past/Perfective
Negative
Polite
Casual Register