An expression can be esthetic.Logical formLearned from8 sentences. A property can be an expression.Logical formLearned from8 sentences. Expressions may be knowned as sexps.Logical formLearned from8 sentences. Regular expressions may run.Logical formLearned from8 sentences. Expressions may appear in a (macro call).Logical formLearned from8 sentences. Functions may be mentioned in expressions.Logical formLearned from8 sentences. Expressions can be constrained.Logical formLearned from8 sentences. A regular expression may specify fields.Logical formLearned from8 sentences. A regular expression may be matched.Logical formLearned from8 sentences. An expression can be difficult.Logical formLearned from8 sentences. A philosophical movement may undergo an expression.Logical formLearned from8 sentences. Expressions can be identical.Logical formLearned from8 sentences. A face can be with an expression.Logical formLearned from8 sentences. Health may undergo an expression.Logical formLearned from8 sentences. A protein may undergo (expression levels).Logical formLearned from8 sentences.