An operator can be wily.Logical formLearned from36 sentences. Operators may offer services.Logical formLearned from36 sentences. Mobile operators can be in a country.Logical formLearned from36 sentences. An operator can be effective.Logical formLearned from36 sentences. An operator may pertain-to an aircraft.Logical formLearned from35 sentences. (Video system operators) can be open.Logical formLearned from35 sentences. Operators can be constituted-of-or-filled-with farms.Logical formLearned from35 sentences. Operators can be liable.Logical formLearned from35 sentences. A (grid operator) may pertain-to a state.Logical formLearned from35 sentences. An operator may pertain-to a state.Logical formLearned from35 sentences. An ability may pertain-to an operator.Logical formLearned from35 sentences. A spokesman can be for (airport operator).Logical formLearned from35 sentences. A (telephone operator) may pertain-to the world.Logical formLearned from35 sentences. A spectrum may pertain-to an operator.Logical formLearned from34 sentences. An operator can be discrete.Logical formLearned from34 sentences.