Data can be valid.Logical formLearned from878 sentences. An (e-mail address) can be valid.Logical formLearned from829 sentences. Concerns can be valid.Logical formLearned from791 sentences. A concern can be valid.Logical formLearned from791 sentences. Ballots can be valid.Logical formLearned from782 sentences. A symbol can be valid.Logical formLearned from701 sentences. Values can be valid.Logical formLearned from685 sentences. An information can be valid.Logical formLearned from664 sentences. An offer can be valid.Logical formLearned from655 sentences. A way can be valid.Logical formLearned from603 sentences. A certificate can be valid.Logical formLearned from586 sentences. Claims can be valid.Logical formLearned from556 sentences. A basis can be valid.Logical formLearned from552 sentences. A form can be valid.Logical formLearned from527 sentences. A contract can be valid.Logical formLearned from512 sentences.