An (identity card) can be valid.Logical formLearned from31 sentences. Patterns can be valid.Logical formLearned from31 sentences. A procedure can be valid.Logical formLearned from31 sentences. A (company email address) can be valid.Logical formLearned from31 sentences. An analogy can be valid.Logical formLearned from31 sentences. Traffic can be valid.Logical formLearned from31 sentences. A warning can be valid.Logical formLearned from31 sentences. An insurance can be valid.Logical formLearned from30 sentences. A proposal can be valid.Logical formLearned from30 sentences. A proof can be valid.Logical formLearned from30 sentences. A hypothesis can be valid.Logical formLearned from30 sentences. A will can be valid.Logical formLearned from30 sentences. A (visa stamp) can be valid.Logical formLearned from30 sentences. A field can be valid.Logical formLearned from30 sentences. Work can be valid.Logical formLearned from30 sentences.