An engine may be failed.Logical formLearned from15 sentences. An engine may be assembled.Logical formLearned from15 sentences. Engines may undergo maintenance.Logical formLearned from15 sentences. An engine can be battered.Logical formLearned from15 sentences. A change can be an engine.Logical formLearned from15 sentences. Engines may pertain-to an era.Logical formLearned from15 sentences. An engine may help.Logical formLearned from15 sentences. A plane may suffer (engine failure).Logical formLearned from15 sentences. An engine can be in production.Logical formLearned from15 sentences. An engine may be employed.Logical formLearned from15 sentences. An engine may deliver power.Logical formLearned from15 sentences. A cryogenic engine can be indigenous.Logical formLearned from15 sentences. A view may show an engine.Logical formLearned from15 sentences. An engine may be produced.Logical formLearned from15 sentences. An engine may be disassembled.Logical formLearned from15 sentences.