Buses may be powered by engines.Logical formLearned from4 sentences. A boat may be powered by an outboard motor.Logical formLearned from4 sentences. A (grist mill) may be powered by a (water wheel).Logical formLearned from4 sentences. An aircraft may be powered by a (piston engine).Logical formLearned from4 sentences. A car may be powered by an engine.Logical formLearned from4 sentences. A bike may be powered.Logical formLearned from4 sentences. Stars may be powered by nuclear fusion.Logical formLearned from4 sentences. An axle may be powered.Logical formLearned from4 sentences. A roadster may be powered by some engine.Logical formLearned from4 sentences. A biplane may be powered by an (inline piston engine).Logical formLearned from4 sentences. Ships may be powered by some diesels.Logical formLearned from4 sentences. Trains may be powered by (steam locomotives).Logical formLearned from4 sentences. An aircraft may be powered by an engine.Logical formLearned from4 sentences. A shaft may be powered.Logical formLearned from4 sentences. A sr20det may be powered.Logical formLearned from4 sentences.