A (telephone operator) may pertain-to a country.Logical formLearned from191 sentences. Operators can be incumbent.Logical formLearned from190 sentences. An operator can be responsible.Logical formLearned from189 sentences. An operator can be shrewd.Logical formLearned from183 sentences. A (conference operator) may pertain-to a person.Logical formLearned from181 sentences. An operator can be experienced.Logical formLearned from178 sentences. Operators can be trained.Logical formLearned from178 sentences. Operators can be licensed.Logical formLearned from178 sentences. Operators can be skilled.Logical formLearned from176 sentences. An operator can be skilled.Logical formLearned from175 sentences. A (network operator) can be mobile.Logical formLearned from175 sentences. A person can be (conference operator).Logical formLearned from174 sentences. A (mine operator) may obtain approval from a representative.Logical formLearned from172 sentences. Service may be provided by a (network operator).Logical formLearned from172 sentences. A mobile operator can be in a country.Logical formLearned from170 sentences.