AnalyzerSentence analysis5SpansSentence偶然地震が起こった。1000 character limitAnalyzeSentence偶ぐう然ぜん地じ震しんが起おこった。Span Details偶ぐう然ぜんcoincidence; chance; accident; by chance; unexpectedly; accidentally; contingencynoun, na-adjective, adverb地じ震しんearthquakenounがsubject markergrammar起おこっhappen; occur; arise-> 起こるgodan verbた。past tense or completed actiongrammar