Question: who did the miami dolphins beat in 1972 super bowl
[{'answer': 'Washington Redskins', 'provenance': [{'wikipedia_id': '14202514', 'title': '1972 Miami Dolphins season', 'start_paragraph_id': 1, 'start_character': 442, 'end_paragraph_id': 1, 'end_character': 461, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '14202514', 'title': '1972 Miami Dolphins season', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 472, 'bleu_score': 0.8808393486067181, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11354674531783990592}, 'section': 'Section::::Abstract.'}]}]