Persons can be sad.Logical formLearned from397 sentences. A panda can be sad.Logical formLearned from393 sentences. A reflection can be sad.Logical formLearned from373 sentences. Events can be sad.Logical formLearned from366 sentences. An excuse can be sad.Logical formLearned from363 sentences. Ones can be sad.Logical formLearned from354 sentences. Eyes can be sad.Logical formLearned from347 sentences. A female may feel sad.Logical formLearned from346 sentences. Memories can be sad.Logical formLearned from339 sentences. Thoughts can be sad.Logical formLearned from326 sentences. A shape can be sad.Logical formLearned from325 sentences. Persons may feel sad.Logical formLearned from325 sentences. A weekend can be sad.Logical formLearned from320 sentences. An incident can be sad.Logical formLearned from319 sentences. A realization can be sad.Logical formLearned from315 sentences.