AnalyzerSentence analysis3SpansSentence不可欠な部分1000 character limitAnalyzeSentence不ふ可か欠けつな部ぶ分ぶんSpan Details不ふ可か欠けつindispensable; essential; vitalna-adjective, nounなadnominal form of the copula after a na-adjectivegrammar部ぶ分ぶんpart; portion; sectionnoun