Question: when was the last time the kansas city chiefs was in the super bowl
[{'answer': '2017', 'provenance': [{'wikipedia_id': '20297793', 'title': 'Kansas City Chiefs', 'start_paragraph_id': 54, 'start_character': 14, 'end_paragraph_id': 54, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Franchise history.:Andy Reid, John Dorsey era.\n'}]}]