Question: when was the last time kentucky won a national championship in football
[{'answer': '1950', 'provenance': [{'wikipedia_id': '7957688', 'title': 'Kentucky Wildcats football', 'start_paragraph_id': 14, 'start_character': 122, 'end_paragraph_id': 14, 'end_character': 126, 'bleu_score': 1.0, 'section': 'Section::::History.:Paul "Bear" Bryant era (1946–1953).\n'}]}, {'provenance': [{'wikipedia_id': '7957688', 'title': 'Kentucky Wildcats football', 'start_paragraph_id': 58, 'start_character': 0, 'end_paragraph_id': 58, 'end_character': 909, 'bleu_score': 0.9093801312160431, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8298330363108878583}, 'section': 'Section::::Championships.:National championships.\n'}]}]