Expressions may reveal emotions to someone.Logical formLearned from16 sentences. Researcher may add an expression of contempt to a list.Logical formLearned from16 sentences. An expression can be for hidding emotions.Logical formLearned from16 sentences. Expressions may arise at stages.Logical formLearned from16 sentences. Expressions may communicate emotions.Logical formLearned from16 sentences. Facial expressions can be redundant.Logical formLearned from16 sentences. Persons may make an expression.Logical formLearned from16 sentences. Babies may develop a range of facial expressions.Logical formLearned from16 sentences. Expressions can be to an art.Logical formLearned from16 sentences. Expressions can be learned.Logical formLearned from16 sentences. Comments can be with expressions.Logical formLearned from16 sentences. Persons can be some readers of expressions.Logical formLearned from16 sentences. Expressions may be shared by humans.Logical formLearned from16 sentences. Facial expressions may be seen among communities.Logical formLearned from16 sentences. Readers may pertain-to expressions.Logical formLearned from16 sentences.