Question: who was president of the united states when pearl harbor was attacked
[{'answer': 'Franklin D. Roosevelt', 'provenance': [{'wikipedia_id': '60098', 'title': 'Attack on Pearl Harbor', 'start_paragraph_id': 5, 'start_character': 207, 'end_paragraph_id': 5, 'end_character': 228, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '60098', 'title': 'Attack on Pearl Harbor', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 463, 'bleu_score': 0.9299940324325051, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5532805857084323979}, 'section': 'Section::::Abstract.'}]}]