Engines may undergo a delivery.Logical formLearned from18 sentences. Engines can be fuel-efficient.Logical formLearned from18 sentences. A case may pertain-to an engine.Logical formLearned from18 sentences. An engine can be at a rear.Logical formLearned from18 sentences. Some engines may be used.Logical formLearned from18 sentences. A car may feature an engine.Logical formLearned from18 sentences. Engines can be developed.Logical formLearned from18 sentences. Engines can be starboard.Logical formLearned from18 sentences. An (engine shutdown) can be automatic.Logical formLearned from18 sentences. A size may pertain-to engines.Logical formLearned from18 sentences. An overhaul may pertain-to an engine.Logical formLearned from18 sentences. An engine may be turn_oned.Logical formLearned from18 sentences. An engine can be for a country.Logical formLearned from18 sentences. A (search engine) can be revolutionary.Logical formLearned from18 sentences. A (search engine) can be for (contracting officers).Logical formLearned from18 sentences.