A cult may operate.Logical formLearned from6 sentences. Defendants may operate.Logical formLearned from6 sentences. Machines may operate some hours.Logical formLearned from6 sentences. A center may operate for some years.Logical formLearned from6 sentences. Bullwhips may operate under a principle.Logical formLearned from6 sentences. Peacekeepers may operate in a gray area of international law.Logical formLearned from6 sentences. Jets may operate.Logical formLearned from6 sentences. A (field hospital) may be operated by a team of doctors.Logical formLearned from6 sentences. Electromagnets may operate at temperatures.Logical formLearned from6 sentences. An (energy system) may operate devices.Logical formLearned from6 sentences. (Wind turbines) may operate.Logical formLearned from6 sentences. A force may operate with assistance.Logical formLearned from6 sentences. A company may operate a (fiber optic network).Logical formLearned from6 sentences. Colleges may operate as institutions.Logical formLearned from6 sentences. Guerrillas may operate with ease.Logical formLearned from6 sentences.