A combination of (agency officers) may operate.Logical formLearned from8 sentences. A commercial vessel may operate under a guise of an (aid ship).Logical formLearned from8 sentences. A group may operate for years.Logical formLearned from8 sentences. Some centrifuges may operate at a facility.Logical formLearned from8 sentences. A bloc may operate by consensus.Logical formLearned from8 sentences. An online magazine may be operated by journalists.Logical formLearned from8 sentences. (Spy planes) may operate in an airspace.Logical formLearned from8 sentences. An (air force) may operate c-130s.Logical formLearned from8 sentences. Pirates may operate from a coastline.Logical formLearned from8 sentences. A clinic may be operated by a company.Logical formLearned from8 sentences. An airline may operate some (passenger flights).Logical formLearned from8 sentences. Some pipeline may be operated by an (oil company).Logical formLearned from8 sentences. Some firms may operate in a zone.Logical formLearned from8 sentences. A company may operate a program.Logical formLearned from8 sentences. Scientists may operate a spacecraft.Logical formLearned from8 sentences.