(Site operators) may undergo a training.Logical formLearned from10 sentences. An operator may have an option.Logical formLearned from10 sentences. An operator may take notes.Logical formLearned from10 sentences. Units may pertain-to a (cable operator).Logical formLearned from10 sentences. Operators can be concerned that something-is-the-case.Logical formLearned from10 sentences. Some operators may outsource (payment processing functions) to third parties.Logical formLearned from10 sentences. An (operator fatigue) can be reduced.Logical formLearned from10 sentences. Operators may pertain-to a mine.Logical formLearned from10 sentences. Networks may pertain-to mobile operators.Logical formLearned from10 sentences. Hold may pertain-to an operator.Logical formLearned from10 sentences. An operator may pertain-to a flight.Logical formLearned from10 sentences. Smartphones can be for mobile operators.Logical formLearned from10 sentences. An operator can be neutral.Logical formLearned from10 sentences. Some operators may have trouble.Logical formLearned from10 sentences. A person may work as a (machine operator).Logical formLearned from10 sentences.