Treaties can be valid.Logical formLearned from3 sentences. A (zip code) can be valid.Logical formLearned from3 sentences. A request may be deemed valid.Logical formLearned from3 sentences. Parties can be valid.Logical formLearned from3 sentences. A social-security number can be valid.Logical formLearned from3 sentences. A (contact address) can be valid.Logical formLearned from3 sentences. Variables can be valid.Logical formLearned from3 sentences. Some treaty can be valid.Logical formLearned from3 sentences. A legal system can be valid.Logical formLearned from3 sentences. A law may be held valid.Logical formLearned from3 sentences. Regulation can be valid.Logical formLearned from3 sentences. A (regular expression) can be valid.Logical formLearned from3 sentences. A (case study) can be valid.Logical formLearned from3 sentences. An imperfection can be a valid argument.Logical formLearned from3 sentences. A (stock symbol) can be valid.Logical formLearned from3 sentences.