AnalyzerSentence analysis2SpansSentence案外役に立つ1000 character limitAnalyzeSentence案あん外がい役やくに立たつSpan Details案あん外がいunexpectedly; surprisingly; contrary to expectations; unexpected; surprising; unforeseenadverb, na-adjective役やくに立たつbe helpful; be useful; serve a purposeexpression, verb