Question: What is the birthdate of this Italian politician, journalist, and leader of the National Fascist Party, ruling the country as Prime Minister, and who ruled Italy as "II Duce" from 1922 to 1943?
{'answer': '29 July 1883', 'supporting_facts': [['Manifesto of the Fascist Intellectuals', 0], ['Manifesto of the Fascist Intellectuals', 1], ['Benito Mussolini', 0]]}