Question: who was the woman that died at chappaquiddick
[{'answer': 'Mary Jo Kopechne', 'provenance': [{'wikipedia_id': '325610', 'title': 'Mary Jo Kopechne', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '325610', 'title': 'Mary Jo Kopechne', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 263, 'bleu_score': 0.8499315997274991, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5773861033863716270}, 'section': 'Section::::Abstract.'}]}]