Operator may undergo a change.Logical formLearned from31 sentences. A (wireless operator) may pertain-to the world.Logical formLearned from31 sentences. A (pay-television operator) may pertain-to a continent.Logical formLearned from31 sentences. Operators can be efficient.Logical formLearned from31 sentences. Operators can be clandestine.Logical formLearned from31 sentences. An operator can be smooth.Logical formLearned from31 sentences. An operator may pertain-to a network.Logical formLearned from31 sentences. Operators can be constituted-of-or-filled-with systems.Logical formLearned from31 sentences. An operator may pertain-to a shuttle.Logical formLearned from31 sentences. Spokeswoman can be for an operator.Logical formLearned from31 sentences. An (oil operator) can be in a country.Logical formLearned from31 sentences. Operators can be in countries.Logical formLearned from31 sentences. A (port operator) may pertain-to a world-city.Logical formLearned from31 sentences. An operator can be czech.Logical formLearned from31 sentences. A percent may pertain-to an operator.Logical formLearned from31 sentences.