An argument can be valid.Logical formLearned from51 sentences. A member can be valid.Logical formLearned from51 sentences. An obligation can be valid.Logical formLearned from51 sentences. A principle can be valid.Logical formLearned from51 sentences. A visa can be valid.Logical formLearned from50 sentences. A form can be valid.Logical formLearned from50 sentences. Measurements can be valid.Logical formLearned from50 sentences. Records can be valid.Logical formLearned from50 sentences. Principles can be valid.Logical formLearned from50 sentences. Observations can be valid.Logical formLearned from50 sentences. Statements can be valid.Logical formLearned from50 sentences. A rule can be valid.Logical formLearned from49 sentences. An attempt can be valid.Logical formLearned from49 sentences. A diagnosis can be valid.Logical formLearned from49 sentences. An area can be valid.Logical formLearned from49 sentences.