A (drug cartel) may operate.Logical formLearned from10 sentences. Engineers may operate.Logical formLearned from10 sentences. Flights may be operated by a country.Logical formLearned from10 sentences. Genes may operate.Logical formLearned from10 sentences. A mission may operate in countries.Logical formLearned from10 sentences. A number of agents may operate in a country.Logical formLearned from10 sentences. Mercenaries may operate.Logical formLearned from10 sentences. A plane may be operated by a company.Logical formLearned from10 sentences. Forces may operate from a country.Logical formLearned from10 sentences. Embassies may operate at (emergency levels).Logical formLearned from10 sentences. A country may operate as a sovereign nation.Logical formLearned from10 sentences. (Terror groups) may operate in a country.Logical formLearned from10 sentences. A government may operate (death squads).Logical formLearned from10 sentences. A government may operate in a shadow of secrecy.Logical formLearned from10 sentences. A (cargo plane) may be operated by (delivery service).Logical formLearned from10 sentences.