A dozen may fail cease-fires.Logical formLearned from10 sentences. An opportunity may fail.Logical formLearned from10 sentences. Some revolution may fail.Logical formLearned from10 sentences. A person may fail grade.Logical formLearned from10 sentences. Foreign ministers may fail.Logical formLearned from10 sentences. A vehicle may fail a criterion.Logical formLearned from10 sentences. A (peace bid) may fail.Logical formLearned from10 sentences. A (troop surge) may fail.Logical formLearned from10 sentences. Unions may fail.Logical formLearned from10 sentences. A world-city may fail in a bid.Logical formLearned from10 sentences. A number of attempts may fail.Logical formLearned from10 sentences. Some channels may fail.Logical formLearned from10 sentences. A person may fail expectations.Logical formLearned from10 sentences. A government may fail a test.Logical formLearned from10 sentences. A character may fail.Logical formLearned from10 sentences.