Question: how many times did the buffalo bills win the super bowl
[{'answer': '2', 'provenance': [{'wikipedia_id': '4315', 'title': 'Buffalo Bills', 'start_paragraph_id': 2, 'start_character': 584, 'end_paragraph_id': 2, 'end_character': 585, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]