AnalyzerSentence analysis4SpansSentenceが低下し始める1000 character limitAnalyzeSentenceが低てい下かし始はじめるSpan Detailsがsubject markergrammar低てい下かfall; decline; drop; deteriorationnoun, suru verbしlight/support verb with a noun or noun-like phrase-> するgrammar始はじめるstart; begin; commence; start up; open; establish; start to ...; begin to ...ichidan verb, auxiliary