(Billing arrangements) can be with mobile operators.Logical formLearned from16 sentences. A (train operator) may pertain-to a country.Logical formLearned from16 sentences. A person can be (camera operator).Logical formLearned from16 sentences. Operators may provide information.Logical formLearned from16 sentences. A (machine operator) can be retired.Logical formLearned from16 sentences. A female may tell an operator that something-is-the-case.Logical formLearned from16 sentences. A person may have operators.Logical formLearned from16 sentences. Operators can be constituted-of-or-filled-with airports.Logical formLearned from16 sentences. An operator can be fly-by-night.Logical formLearned from16 sentences. An operator may pertain-to a ride.Logical formLearned from16 sentences. A (supermarket operator) can be in a country.Logical formLearned from16 sentences. An operator may concern operations.Logical formLearned from16 sentences. Responsibilities may pertain-to an operator.Logical formLearned from16 sentences. Amateur (radio operators) can be in a country.Logical formLearned from16 sentences. Operators may have an incentive.Logical formLearned from16 sentences.