A person may evaluate an expression.Logical formLearned from7 sentences. Expressions may contain references to symbols.Logical formLearned from7 sentences. Functions may undergo an expression.Logical formLearned from7 sentences. An expression can be literate.Logical formLearned from7 sentences. A term may pertain-to an expression.Logical formLearned from7 sentences. An expression may refer to general judgments.Logical formLearned from7 sentences. Human existence may undergo an expression.Logical formLearned from7 sentences. An expression can be for a size.Logical formLearned from7 sentences. A person may mean by an expression.Logical formLearned from7 sentences. A spirit may find expression.Logical formLearned from7 sentences. An expression may evaluate to a number.Logical formLearned from7 sentences. Expressions may undergo a derivation.Logical formLearned from7 sentences. Function may undergo an expression.Logical formLearned from7 sentences. Expressions can be pathological.Logical formLearned from7 sentences. Facial expressions can be universal.Logical formLearned from7 sentences.