A (face icon) can be sad.Logical formLearned from5 sentences. A black mark can be sad.Logical formLearned from5 sentences. A son may look sad.Logical formLearned from5 sentences. Only ones can be sad.Logical formLearned from5 sentences. A celebration can be sad.Logical formLearned from5 sentences. Possibilities can be sad.Logical formLearned from5 sentences. Permutations can be sad.Logical formLearned from5 sentences. An accident can be sad.Logical formLearned from5 sentences. A church can be sad.Logical formLearned from5 sentences. A person can be sad for terrorists.Logical formLearned from5 sentences. A paragraph can be sad.Logical formLearned from5 sentences. A male may call sad.Logical formLearned from5 sentences. A person may feel sad about events.Logical formLearned from5 sentences. A person can be sad for a death.Logical formLearned from5 sentences. A woman can be sad.Logical formLearned from5 sentences.