AnalyzerSentence analysis4SpansSentence換気ダクトは金属製だ。1000 character limitAnalyzeSentence換かん気きダクトは金きん属ぞく製せいだ。Span Details換かん気きダクトventilation ductnounはtopic markergrammar金きん属ぞく製せいmade of metal; metallicno-adjective, nounだ。plain copulagrammar