AnalyzerSentence analysis3SpansSentence大事な部分1000 character limitAnalyzeSentence大だい事じな部ぶ分ぶんSpan Details大だい事じimportant; serious; crucial; valuable; precious; treasured; serious matter; major incident; crisis; great undertaking; great enterprise; great thing; safe; OKna-adjective, nounなadnominal form of the copula after a na-adjectivegrammar部ぶ分ぶんpart; portion; sectionnoun