(Oil companies) may operate in a delta.Logical formLearned from17 sentences. Carriers may operate (charter flights).Logical formLearned from16 sentences. A company may operate a joint venture.Logical formLearned from16 sentences. (Oil companies) may operate in a country.Logical formLearned from16 sentences. A carrier may operate.Logical formLearned from16 sentences. A railway may be operated.Logical formLearned from16 sentences. A system may be operated by a company.Logical formLearned from16 sentences. And/or may be operated.Logical formLearned from16 sentences. Commercial vehicles may operate on some highways.Logical formLearned from16 sentences. A district may operate an elementary school.Logical formLearned from16 sentences. Some others may operate.Logical formLearned from16 sentences. A district may operate some public schools.Logical formLearned from16 sentences. A female may operate in an ocean.Logical formLearned from16 sentences. A company may operate some (manufacturing facilities).Logical formLearned from16 sentences. A service may operate some minutes.Logical formLearned from16 sentences.