AnalyzerSentence analysis3SpansSentence一番の原因1000 character limitAnalyzeSentence一いち番ばんの原げん因いんSpan Details一いち番ばんnumber one; first; first place; most; best; one game; one round; one bout; as a test; by way of trial; tentatively; song; piecenoun, no-adjective, adverbのpossession, attribution, nominalizer, or nominal linkergrammar原げん因いんcause; origin; sourcenoun, suru verb