Triple

Target class: heat engine
Context triple: [Watt steam engine, instanceOf, heat engine]

• A. internal combustion engine
  An internal combustion engine is a machine that converts the chemical energy of fuel into mechanical work by burning the fuel-air mixture within its cylinders to produce controlled explosions that drive pistons or rotors.
• B. liquid-cooled aircraft engine
  A liquid-cooled aircraft engine is a piston or reciprocating powerplant that uses a circulating liquid coolant, typically water or glycol, to absorb and dissipate heat from the engine cylinders and heads, enabling efficient temperature control and reliable operation in flight.
• C. steam-generating boiler
  A steam-generating boiler is an enclosed vessel in which water is heated—typically by burning fuel or using other heat sources—to produce pressurized steam for power generation, heating, or industrial processes.
• D. liquid-cooled aero engine
  A liquid-cooled aero engine is an aircraft powerplant that uses a circulating liquid coolant, typically water or glycol, to absorb and dissipate heat from the engine, enabling higher performance and more consistent operating temperatures than air-cooled designs.
• E. turbofan engine
  A turbofan engine is a type of air-breathing jet engine that uses a large fan driven by a gas turbine to produce thrust through both accelerated bypass air and exhaust gases for efficient high-speed propulsion.
• F. None of above. chosen