A market may operate.Logical formLearned from25 sentences. A laser may operate.Logical formLearned from25 sentences. Some militant groups may operate.Logical formLearned from25 sentences. Militants may operate with comfort.Logical formLearned from25 sentences. Terrorists may operate from a country.Logical formLearned from25 sentences. Helicopters may operate in territory.Logical formLearned from25 sentences. Forces may operate in the countryside.Logical formLearned from25 sentences. Militaries may operate in a region.Logical formLearned from25 sentences. Some troops may operate in a country.Logical formLearned from25 sentences. Soldiers may operate in a country.Logical formLearned from25 sentences. Vehicles may operate.Logical formLearned from25 sentences. An airline may operate some aircraft.Logical formLearned from24 sentences. Some buses may operate.Logical formLearned from24 sentences. Companies may operate in some countries.Logical formLearned from24 sentences. A line may be operated by railways.Logical formLearned from24 sentences.