Question: What 5th generation USAF tactical fighter built by Lockheed Martin and Boeing will remain in service alongside the new sixth generation fighter?
{'answer': 'Lockheed Martin F-22 Raptor', 'supporting_facts': [['Sixth-generation jet fighter', 2], ['Lockheed Martin F-22 Raptor', 0], ['Lockheed Martin F-22 Raptor', 2]]}