Question: who was the 26th president of the united states
[{'answer': 'Theodore Roosevelt', 'provenance': [{'wikipedia_id': '30535', 'title': 'Theodore Roosevelt', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]