Question: who did the chiefs beat in the superbowl
[{'answer': 'Minnesota Vikings', 'provenance': [{'wikipedia_id': '8680299', 'title': '1969 Kansas City Chiefs season', 'start_paragraph_id': 1, 'start_character': 240, 'end_paragraph_id': 1, 'end_character': 257, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '8680299', 'title': '1969 Kansas City Chiefs season', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 892, 'bleu_score': 0.9162599356898631, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7696398397039125017}, 'section': 'Section::::Abstract.'}]}]