Question: who were the two teams that played in the first super bowl
[{'answer': 'Green Bay Packers', 'provenance': [{'wikipedia_id': '29128', 'title': 'Super Bowl I', 'start_paragraph_id': 1, 'start_character': 359, 'end_paragraph_id': 1, 'end_character': 376, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Kansas City Chiefs', 'provenance': [{'wikipedia_id': '29128', 'title': 'Super Bowl I', 'start_paragraph_id': 1, 'start_character': 430, 'end_paragraph_id': 1, 'end_character': 448, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '29128', 'title': 'Super Bowl I', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 464, 'bleu_score': 0.947007920163179, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15889269973855420967}, 'section': 'Section::::Abstract.'}]}]