a gasoline engine is a part of gasoline lawn mower
gasoline_powered_engine is not internal_combustion_engine. gasoline_engine is internal_combustion_engine. petrol is gasoline. gas_engine is internal_combustion_engine. gasoline is fuel. gasoline_pump is mechanical_pump. gasoline_engine is not internal_combustion_engine. gasoline_powered_engine is internal_combustion_engine.