A promise may remain valid.Logical formLearned from4 sentences. An alibi can be valid.Logical formLearned from4 sentences. Currencies can be valid.Logical formLearned from4 sentences. A rationale of a merger can be valid.Logical formLearned from4 sentences. (Absentee ballots) can be valid.Logical formLearned from4 sentences. An arrest can be valid.Logical formLearned from4 sentences. Ballot can be valid.Logical formLearned from4 sentences. Contracts may remain valid.Logical formLearned from4 sentences. A (takeover announcement) can be valid.Logical formLearned from4 sentences. Results may be declared valid.Logical formLearned from4 sentences. A reward can be valid.Logical formLearned from4 sentences. Challengers can be valid.Logical formLearned from4 sentences. A (health insurance policy) can be valid.Logical formLearned from4 sentences. Sackings can be valid.Logical formLearned from4 sentences. A warning can be valid.Logical formLearned from4 sentences.