Question: The Republic P-43 Lancer was a single-engine, all-metal, low-wing monoplane fighter aircraft built by Republic, first delivered to the United States Army Air Corps in 1940, it was considered fast and well-armed with excellent long-range capabilities, until the arrival of which World War II-era American piston-engined fighter aircraft, that had distinctive twin booms and a central nacelle containing the cockpit and armament?
{'answer': 'Lockheed P-38 Lightning', 'supporting_facts': [['Republic P-43 Lancer', 3], ['Lockheed P-38 Lightning', 0]]}