Question: when is the last time kc chiefs won a playoff game
[{'answer': 'January 1 , 2017', 'provenance': [{'wikipedia_id': '20297793', 'title': 'Kansas City Chiefs', 'start_paragraph_id': 54, 'start_character': 3, 'end_paragraph_id': 54, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Franchise history.:Andy Reid, John Dorsey era.\n'}]}, {'provenance': [{'wikipedia_id': '20297793', 'title': 'Kansas City Chiefs', 'start_paragraph_id': 54, 'start_character': 0, 'end_paragraph_id': 54, 'end_character': 222, 'bleu_score': 0.953991849837532, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4330896498303385084}, 'section': 'Section::::Franchise history.:Andy Reid, John Dorsey era.\n'}]}]