Engine may fail.Logical formLearned from8 sentences. Health may fail a female.Logical formLearned from8 sentences. Dozens may fail.Logical formLearned from8 sentences. Taxpayers may fail customers.Logical formLearned from8 sentences. A president may fail.Logical formLearned from8 sentences. Some percent of officers may fail (security checks).Logical formLearned from8 sentences. A (world order) may fail.Logical formLearned from8 sentences. An aircraft may fail.Logical formLearned from8 sentences. A country may fail in obligations.Logical formLearned from8 sentences. A kidnapping may fail.Logical formLearned from8 sentences. A country may fail in a test of organizing free elections.Logical formLearned from8 sentences. Missions may fail.Logical formLearned from8 sentences. Policies may fail in administrations.Logical formLearned from8 sentences. Talks may be failed.Logical formLearned from8 sentences. Forces may fail in a task of providding security.Logical formLearned from8 sentences.