Flights may operate some times.Logical formLearned from6 sentences. A plane may be operated by an airline.Logical formLearned from6 sentences. Ms-does may operate systems.Logical formLearned from6 sentences. An (ocean liner) may operate a vessel.Logical formLearned from6 sentences. Persons may operate within (comfort zones).Logical formLearned from6 sentences. Some structures may operate in a country.Logical formLearned from6 sentences. A server may be operated by a website.Logical formLearned from6 sentences. A neurosurgeon may operate.Logical formLearned from6 sentences. (Surveillance cameras) may be operated by companies.Logical formLearned from6 sentences. (Government departments) may operate.Logical formLearned from6 sentences. A part may operate.Logical formLearned from6 sentences. Batteries may operate.Logical formLearned from6 sentences. Systems may operate for years.Logical formLearned from6 sentences. Aircrafts may operate from the skies.Logical formLearned from6 sentences. Products may operate after hours.Logical formLearned from6 sentences.