A doctrine may operate.Logical formLearned from5 sentences. An airline may operate (cargo services).Logical formLearned from5 sentences. Groups may operate against a country.Logical formLearned from5 sentences. A (post office) may operate at a US-city.Logical formLearned from5 sentences. A (wire service) may be operated by newspaper.Logical formLearned from5 sentences. Some vessels may operate in waters.Logical formLearned from5 sentences. End-users may operate devices.Logical formLearned from5 sentences. A female may operate under names.Logical formLearned from5 sentences. Buses may operate on a route.Logical formLearned from5 sentences. A female may be operated by a male.Logical formLearned from5 sentences. Some detachments may operate in a country.Logical formLearned from5 sentences. Some services may be operated by buses.Logical formLearned from5 sentences. A service may be operated by buses.Logical formLearned from5 sentences. An (energy company) may operate in a country.Logical formLearned from5 sentences. Some shops may operate.Logical formLearned from5 sentences.