A company may operate a train.Logical formLearned from8 sentences. Some businesses may operate in a country.Logical formLearned from8 sentences. An underworld may operate in jungles.Logical formLearned from8 sentences. Rigs may operate.Logical formLearned from8 sentences. Forces may operate from a country.Logical formLearned from8 sentences. Airlines may operate services.Logical formLearned from8 sentences. A person may operate with a mentality.Logical formLearned from8 sentences. Plants may operate at some percent of capacity.Logical formLearned from8 sentences. A turboprop may be operated by a firm.Logical formLearned from8 sentences. Jets may operate.Logical formLearned from8 sentences. Drivers may operate.Logical formLearned from8 sentences. A world-city may operate a lighthouse.Logical formLearned from8 sentences. An opera may operate with a deficit.Logical formLearned from8 sentences. A treaty may operate.Logical formLearned from7 sentences. A reactor may operate for some years.Logical formLearned from7 sentences.