A person may fall sad.Logical formLearned from11 sentences. A retreat can be sad.Logical formLearned from11 sentences. A sick joke can be sad.Logical formLearned from11 sentences. A little girl can be sad.Logical formLearned from11 sentences. A night can be sad.Logical formLearned from11 sentences. A streak can be sad.Logical formLearned from11 sentences. A fantasy can be sad.Logical formLearned from11 sentences. A reply can be sad.Logical formLearned from11 sentences. A background can be sad.Logical formLearned from11 sentences. A division can be sad.Logical formLearned from11 sentences. Efforts can be sad.Logical formLearned from11 sentences. A coda can be sad.Logical formLearned from11 sentences. A world-city can be sad.Logical formLearned from11 sentences. A caravan can be sad.Logical formLearned from11 sentences. A race can be sad.Logical formLearned from11 sentences.