Question: who was the last american president to die
[{'answer': 'Gerald Ford', 'provenance': [{'wikipedia_id': '1961788', 'title': 'List of Presidents of the United States by date of death', 'start_paragraph_id': 9, 'start_character': 53, 'end_paragraph_id': 9, 'end_character': 64, 'bleu_score': 1.0, 'section': 'Section::::Died same day, date, year, age..:Same date.\n'}]}]