Question: who was the president of the us during ww2
[{'answer': 'Franklin Delano Roosevelt', 'provenance': [{'wikipedia_id': '10979', 'title': 'Franklin D. Roosevelt', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 25, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '10979', 'title': 'Franklin D. Roosevelt', 'start_paragraph_id': 1, 'start_character': 29, 'end_paragraph_id': 1, 'end_character': 850, 'bleu_score': 0.5720598423087421, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17403006789336937210}, 'section': 'Section::::Abstract.'}]}]