A friend can be sad.Logical formLearned from39 sentences. A lament can be sad.Logical formLearned from39 sentences. A milestone can be sad.Logical formLearned from39 sentences. A father can be sad.Logical formLearned from39 sentences. Examples can be sad.Logical formLearned from38 sentences. A step can be sad.Logical formLearned from38 sentences. A person may get sad that something-is-the-case.Logical formLearned from38 sentences. A realisation can be sad.Logical formLearned from38 sentences. An effect can be sad.Logical formLearned from38 sentences. A silence can be sad.Logical formLearned from38 sentences. Moods can be sad.Logical formLearned from38 sentences. Places can be sad.Logical formLearned from38 sentences. A process can be sad.Logical formLearned from38 sentences. Women can be sad.Logical formLearned from37 sentences. A lady can be sad.Logical formLearned from37 sentences.