A train may operate.Logical formLearned from39 sentences. A machine may operate.Logical formLearned from39 sentences. Ngoes may operate.Logical formLearned from39 sentences. A country may be operated.Logical formLearned from39 sentences. A clock may be operated with (finger taps).Logical formLearned from39 sentences. Stores may operate.Logical formLearned from39 sentences. A company may operate some locations.Logical formLearned from39 sentences. A vessel may operate.Logical formLearned from39 sentences. An aircraft may be operated.Logical formLearned from39 sentences. Leaders may operate.Logical formLearned from39 sentences. Rebels may operate in an area.Logical formLearned from39 sentences. Railroads may operate in a state of a us-state.Logical formLearned from38 sentences. A device may be operated.Logical formLearned from38 sentences. Laws may operate.Logical formLearned from38 sentences. Flights may be operated.Logical formLearned from38 sentences.