A tone can be valid.Logical formLearned from4 sentences. An angle can be valid.Logical formLearned from4 sentences. A (field goal) can be valid.Logical formLearned from4 sentences. Gifts can be valid.Logical formLearned from4 sentences. A derivation can be valid.Logical formLearned from4 sentences. (Construction permits) can be valid.Logical formLearned from4 sentences. States can be valid.Logical formLearned from4 sentences. Some materials can be valid.Logical formLearned from4 sentences. Reasons may be considered valid.Logical formLearned from4 sentences. A distribution can be valid.Logical formLearned from4 sentences. A book can be valid.Logical formLearned from4 sentences. A logical form can be valid.Logical formLearned from4 sentences. A quorum can be valid.Logical formLearned from4 sentences. Elections may be declared valid.Logical formLearned from4 sentences. Trusts can be valid.Logical formLearned from4 sentences.