Question: who was the president when the depression started
[{'answer': 'President Herbert Hoover', 'provenance': [{'wikipedia_id': '2685269', 'title': 'Great Depression in the United States', 'start_paragraph_id': 4, 'start_character': 91, 'end_paragraph_id': 4, 'end_character': 115, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2685269', 'title': 'Great Depression in the United States', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 438, 'bleu_score': 0.8567716464560671, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9284614305550645621}, 'section': 'Section::::Abstract.'}]}]