Question: who won the presidential election by one vote
[{'answer': 'Rutherford B. Hayes', 'provenance': [{'wikipedia_id': '40402', 'title': '1876 United States presidential election', 'start_paragraph_id': 1, 'start_character': 314, 'end_paragraph_id': 1, 'end_character': 333, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]