AnalyzerSentence analysis4SpansSentence火災報知器が作動する1000 character limitAnalyzeSentence火か災さい報ほう知ち器きが作さ動どうするSpan Details火か災さい報ほう知ち器きfire alarmnounがsubject markergrammar作さ動どうoperation; functioning; runningnoun, suru verbするlight/support verb with a noun or noun-like phrasegrammar