A (rail operator) may pertain-to a country.Logical formLearned from117 sentences. A mobile operator can be by subscribers.Logical formLearned from116 sentences. Operators can be fly-by-night.Logical formLearned from116 sentences. Operator may pertain-to a road.Logical formLearned from113 sentences. Operators can be covert.Logical formLearned from111 sentences. Operators can be shady.Logical formLearned from109 sentences. Some operators can be in a country.Logical formLearned from107 sentences. An (airport operator) may pertain-to a country.Logical formLearned from107 sentences. An operator can be licensed.Logical formLearned from106 sentences. An operator may pertain-to a (stock exchange).Logical formLearned from104 sentences. An operator may pertain-to a train.Logical formLearned from102 sentences. An operator can be regional.Logical formLearned from102 sentences. (Network operators) can be mobile.Logical formLearned from102 sentences. (Tour operators) may pertain-to a country.Logical formLearned from102 sentences. A spokesman can be for an operator.Logical formLearned from100 sentences.