A (drilling rig) may operate for an (oil company).Logical formLearned from5 sentences. A suspect may operate.Logical formLearned from5 sentences. A navy may operate.Logical formLearned from5 sentences. Forces may operate with support.Logical formLearned from5 sentences. Some countries may operate systems.Logical formLearned from5 sentences. A (tank crew) may operate.Logical formLearned from5 sentences. (Aid organizations) may operate in a country.Logical formLearned from5 sentences. A complex may be operated by a company.Logical formLearned from5 sentences. Rebels may operate in (border areas).Logical formLearned from5 sentences. Carriers may operate on a schedule.Logical formLearned from5 sentences. A company may operate a reactor.Logical formLearned from5 sentences. A bank may operate in a world-city.Logical formLearned from5 sentences. A natural-gas field may be operated by a company.Logical formLearned from5 sentences. Terrorists may operate in bands.Logical formLearned from5 sentences. Businesses may operate in rural areas.Logical formLearned from5 sentences.