Question: who was president of the united states in 1938
[{'answer': 'Franklin D. Roosevelt', 'provenance': [{'wikipedia_id': '24806966', 'title': '1938 in the United States', 'start_paragraph_id': 4, 'start_character': 23, 'end_paragraph_id': 4, 'end_character': 43, 'bleu_score': 1.0, 'section': 'Section::::Incumbents.:Federal Government.\n'}]}, {'provenance': [{'wikipedia_id': '24806966', 'title': '1938 in the United States', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 56, 'bleu_score': 0.725979529115477, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7863272990228271866}, 'section': 'Section::::Incumbents.:Federal Government.\n'}]}]