Services may operate.Logical formLearned from10 sentences. Firms may operate in sectors.Logical formLearned from10 sentences. A charity may operate in a country.Logical formLearned from10 sentences. Some (finance companies) may operate in a country.Logical formLearned from10 sentences. A ground may operate in parallel.Logical formLearned from10 sentences. Carriers may operate some flights.Logical formLearned from10 sentences. Some airlines may operate at an airport.Logical formLearned from10 sentences. A ring may operate in cities.Logical formLearned from10 sentences. Forces may operate from a base.Logical formLearned from10 sentences. An aircraft may be operated by (budget carrier).Logical formLearned from10 sentences. A male may operate a firm.Logical formLearned from10 sentences. Some newspaper may operate.Logical formLearned from10 sentences. An (air force) may operate.Logical formLearned from10 sentences. Flights may be operated by a government-agency.Logical formLearned from10 sentences. (Ground troops) may operate around some (border villages).Logical formLearned from10 sentences.