Question: how many national championships does byu have in football
[{'answer': 'one', 'provenance': [{'wikipedia_id': '7947508', 'title': 'BYU Cougars football', 'start_paragraph_id': 1, 'start_character': 320, 'end_paragraph_id': 1, 'end_character': 323, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7947508', 'title': 'BYU Cougars football', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 821, 'bleu_score': 0.8672130310171371, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9185755945299749067}, 'section': 'Section::::Abstract.'}]}]