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Sentence

石せき炭たん層そうの採さい掘くつが始はじまった。

Span Details

石せき炭たん層そう

coal seam; coal bed

possession, attribution, nominalizer, or nominal linker

採さい掘くつ

mining; digging; excavation

noun, suru verb

始はじまっ

begin; start; commence

-> 始まるgodan verb

past tense or completed action