AnalyzerSentence analysis2SpansSentence珍しい要素1000 character limitAnalyzeSentence珍めずらしい要よう素そSpan Details珍めずらしいrare; uncommon; unusual; new; novel; unfamiliar; fine; splendid; preciousi-adjective要よう素そcomponent; factor; element; element (computing); member (data structure)noun