Analyzer
Sentence analysis
6Spans
Sentence
Span Details
未曾有
unprecedented; unheard-of; record-breakingno-adjective, noun
の
possession, attribution, nominalizer, or nominal linkergrammar
大災害
great disaster; major catastrophenoun
が
subject markergrammar
発生
occurrence; outbreak; emergence; generation; production; development; growth; ontogenynoun, suru verb
した。
light/support verb with a noun or noun-like phrase-> するgrammar