Gratitude may undergo expressions.Logical formLearned from260 sentences. Joy may undergo an expression.Logical formLearned from260 sentences. A person may use an expression.Logical formLearned from260 sentences. An expression can be angry.Logical formLearned from260 sentences. An expression can be bemused.Logical formLearned from257 sentences. Expressions can be on faces.Logical formLearned from256 sentences. An expression can be innocent.Logical formLearned from255 sentences. Anger may undergo expressions.Logical formLearned from254 sentences. An expression can be spontaneous.Logical formLearned from251 sentences. An expression can be blank.Logical formLearned from250 sentences. An expression can be sententious.Logical formLearned from249 sentences. An expression can be beautiful.Logical formLearned from248 sentences. A meaning may pertain-to an expression.Logical formLearned from247 sentences. An expression can be genuine.Logical formLearned from246 sentences. An expression can be horrified.Logical formLearned from241 sentences.