Question: who's ranked number one in the big 12
[{'answer': 'Baylor', 'provenance': [{'wikipedia_id': '78362', 'title': 'Big 12 Conference', 'start_paragraph_id': 2, 'start_character': 168, 'end_paragraph_id': 2, 'end_character': 174, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]