爆発 ばくはつ てき噴火 ふんかじゃありませんでした
bakuhatsuteki funkajārimasendeshita

Noun
Desu Copula

The polite, past negative form of 爆発的噴火

1. Was not explosive eruption.; Was not an explosive outburst.

Past/Perfective
Negative
Polite
Terminal Form