AnalyzerSentence analysis4SpansSentence成功の鍵は努力だ。1000 character limitAnalyzeSentence成せい功こうの鍵かぎは努ど力りょくだ。Span Details成せい功こうの鍵かぎkey to success; key success factorexpression, nounはtopic markergrammar努ど力りょくeffort; hard work; endeavornoun, suru verbだ。plain copulagrammar