A force may operate against insurgents.Logical formLearned from7 sentences. Some camps may be operated by rebels.Logical formLearned from7 sentences. Persons may operate in an economic environment.Logical formLearned from7 sentences. Persons may operate on a presumption.Logical formLearned from7 sentences. Police may operate.Logical formLearned from7 sentences. Pirates may operate in an area.Logical formLearned from7 sentences. Military rulers may operate under a veil of secrecy.Logical formLearned from7 sentences. Some countries may operate in a country.Logical formLearned from7 sentences. Companies may operate in economies.Logical formLearned from7 sentences. A company may operate some planes.Logical formLearned from7 sentences. (Budget carrier) may operate a plane.Logical formLearned from7 sentences. An aircraft may be operated by low-cost carrier.Logical formLearned from7 sentences. Some troops may operate in a country.Logical formLearned from7 sentences. Islamic militants may operate in a region.Logical formLearned from7 sentences. Some foreign oil may operate in a country.Logical formLearned from7 sentences.