An operator may pertain-to a pipeline.Logical formLearned from16 sentences. Some operators can be in a continent.Logical formLearned from16 sentences. An operator may pertain-to a tanker.Logical formLearned from16 sentences. An operator can be by revenue.Logical formLearned from16 sentences. An operator may play a fool.Logical formLearned from16 sentences. A (stock market operator) may pertain-to a world-city.Logical formLearned from16 sentences. A female may work as a (telephone operator).Logical formLearned from16 sentences. A (phone operator) may pertain-to a world-city.Logical formLearned from16 sentences. An operator may pertain-to a market.Logical formLearned from16 sentences. A (tunnel operator) can be troubled.Logical formLearned from16 sentences. A (rail operator) can be troubled.Logical formLearned from16 sentences. A (telecom operator) can be in a country.Logical formLearned from16 sentences. An operator may pertain-to a park.Logical formLearned from16 sentences. Shares can be in operator.Logical formLearned from16 sentences. (Telecommunications operators) may pertain-to the world.Logical formLearned from15 sentences.