Question: who has won more super bowls afc or nfc
[{'answer': 'NFC', 'provenance': [{'wikipedia_id': '2145410', 'title': 'List of Super Bowl champions', 'start_paragraph_id': 1, 'start_character': 560, 'end_paragraph_id': 1, 'end_character': 563, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2145410', 'title': 'List of Super Bowl champions', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 691, 'bleu_score': 0.9141067011601061, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18289206612031965702}, 'section': 'Section::::Abstract.'}]}]