An (intelligence operation) can be covert.Logical formLearned from15 sentences. Operations can be risky.Logical formLearned from15 sentences. Operations can be against a US-city.Logical formLearned from15 sentences. Some operations can be against a country.Logical formLearned from15 sentences. A (news operation) may pertain-to a station.Logical formLearned from15 sentences. Operation can be effective.Logical formLearned from15 sentences. Operation may be cancelled.Logical formLearned from15 sentences. A railroad can be in operation.Logical formLearned from15 sentences. Planning can be for operation.Logical formLearned from15 sentences. A government-agency may conduct operations.Logical formLearned from15 sentences. A press may undergo an operation.Logical formLearned from15 sentences. A location can be for operations.Logical formLearned from15 sentences. (Computer networks) may undergo an operation.Logical formLearned from15 sentences. An operation may pertain-to a business.Logical formLearned from15 sentences. Operations may be combined.Logical formLearned from15 sentences.