Taxes may undergo a certification.Logical formLearned from4 sentences. A difference can be between certification.Logical formLearned from4 sentences. Programmers may undergo a certification.Logical formLearned from4 sentences. Devices may undergo a certification.Logical formLearned from4 sentences. An education may be required for certification.Logical formLearned from4 sentences. Rules may govern certification.Logical formLearned from4 sentences. A certification can be for a facility.Logical formLearned from4 sentences. Certification can be a basis.Logical formLearned from4 sentences. A proof may pertain-to a certification.Logical formLearned from4 sentences. A certification can be invalid.Logical formLearned from4 sentences. Credit may undergo a certification.Logical formLearned from4 sentences. A (certification form) may indicate that something-is-the-case.Logical formLearned from4 sentences. A facility may seek certification.Logical formLearned from4 sentences. A certification may be withdrawned.Logical formLearned from4 sentences. A certification may be revised.Logical formLearned from4 sentences.