Question: Vitim Airport is a public use airport built in Vitim, Sakha (Yakutia) Republic, Russia during World War II for the Alaska-Siberian (ALSIB) air route used to ferry which policy aircraft, formally titled "An Act to Promote the Defense of the United States?
{'answer': 'Lend-Lease', 'supporting_facts': [['Vitim Airport', 0], ['Lend-Lease', 0]]}