Question: who won the 1973 college football national championship
[{'answer': 'Notre Dame', 'provenance': [{'wikipedia_id': '14930823', 'title': '1973 NCAA Division I football season', 'start_paragraph_id': 2, 'start_character': 264, 'end_paragraph_id': 2, 'end_character': 274, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '14930823', 'title': '1973 NCAA Division I football season', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 1006, 'bleu_score': 0.9552675221525421, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7016991939363285108}, 'section': 'Section::::Abstract.'}]}]