a gasoline engine is a kind of internal combustion engine
internal_combustion_engine is not combustion_engine. internal_combustion_engine is combustion_engine. gasoline_powered_engine is not internal_combustion_engine. gasoline_engine is internal_combustion_engine. gas_engine is not internal_combustion_engine. engines is internal_combustion_engines. gas_engine is internal_combustion_engine. gasoline_engine is not internal_combustion_engine. internal_combustion_engine is engine. gasoline_powered_engine is internal_combustion_engine.