Question: where did this case of product tampering occur
[{'answer': 'the Chicago metropolitan area', 'provenance': [{'wikipedia_id': '330675', 'title': 'Chicago Tylenol murders', 'start_paragraph_id': 1, 'start_character': 95, 'end_paragraph_id': 1, 'end_character': 124, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '330675', 'title': 'Chicago Tylenol murders', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15242883256708611261}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '330675', 'title': 'Chicago Tylenol murders', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 353, 'bleu_score': 0.963949056609222, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15242883256708611261}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '330675', 'title': 'Chicago Tylenol murders', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The Chicago Tylenol Murders were a series of poisoning deaths resulting from drug tampering in the Chicago metropolitan area in 1982.', 'The Chicago Tylenol Murders were a series of poisoning deaths resulting from drug tampering in the Chicago metropolitan area in 1982. The victims had all taken Tylenol-branded acetaminophen capsules that had been laced with potassium cyanide', 'The Chicago Tylenol Murders were a series of poisoning deaths resulting from drug tampering in the Chicago metropolitan area in 1982.']}}]}]