A value may pertain-to an id.Logical formLearned from21 sentences. Id may describe him-or-herself.Logical formLearned from21 sentences. (Id cards) can be mandatory.Logical formLearned from21 sentences. Id may be used.Logical formLearned from21 sentences. (Id cards) can be false.Logical formLearned from21 sentences. An (id card) may pertain-to a student.Logical formLearned from21 sentences. A person may know id.Logical formLearned from21 sentences. An (id card) can be forged.Logical formLearned from21 sentences. A country may use a fake id.Logical formLearned from21 sentences. An (id number) may pertain-to a government-agency.Logical formLearned from20 sentences. Values can be different from a (server user id).Logical formLearned from20 sentences. (Id cards) may undergo an issuance.Logical formLearned from20 sentences. An id can be a number.Logical formLearned from20 sentences. An id can be invalid.Logical formLearned from20 sentences. An id can be effective.Logical formLearned from20 sentences.