Airlines may operate a plane.Logical formLearned from38 sentences. The press may operate.Logical formLearned from38 sentences. Some units may operate.Logical formLearned from38 sentences. Some stores may operate.Logical formLearned from38 sentences. A country may operate in a country.Logical formLearned from38 sentences. Companies may operate in countries.Logical formLearned from38 sentences. A facility may be operated.Logical formLearned from38 sentences. (Oil companies) may operate in a country.Logical formLearned from38 sentences. Pirates may operate speedboats.Logical formLearned from38 sentences. A person may operate a system.Logical formLearned from38 sentences. Some men may operate a cutter.Logical formLearned from37 sentences. A company may operate an airport.Logical formLearned from37 sentences. Mechanisms may operate.Logical formLearned from37 sentences. Boats may operate.Logical formLearned from37 sentences. A time may be required for operatting a camera.Logical formLearned from37 sentences.