A plane may be operated by a carrier.Logical formLearned from9 sentences. Persons may operate for some months.Logical formLearned from9 sentences. A country may operate a cascade.Logical formLearned from9 sentences. Some militias may operate in creeks of a region.Logical formLearned from9 sentences. Groups may operate with impunity.Logical formLearned from9 sentences. Some (energy concerns) may operate in a country.Logical formLearned from9 sentences. A (peacekeeping force) may operate in a country.Logical formLearned from9 sentences. A doctor may operate on a person.Logical formLearned from9 sentences. A tv-network may operate.Logical formLearned from9 sentences. A company may be operated by a (charter firm).Logical formLearned from9 sentences. A website may be operated by a company.Logical formLearned from9 sentences. A company may operate some breweries.Logical formLearned from9 sentences. A company may operate a (theme park).Logical formLearned from9 sentences. Troops may operate under command.Logical formLearned from9 sentences. Members may operate in a territory.Logical formLearned from9 sentences.