Question: when did coke start using high fructose corn syrup
[{'answer': 'July 10 , 1985', 'provenance': [{'wikipedia_id': '6690', 'title': 'Coca-Cola', 'start_paragraph_id': 31, 'start_character': 424, 'end_paragraph_id': 31, 'end_character': 438, 'bleu_score': 1.0, 'section': 'Section::::History.:New Coke.\n'}]}, {'provenance': [{'wikipedia_id': '6690', 'title': 'Coca-Cola', 'start_paragraph_id': 31, 'start_character': 0, 'end_paragraph_id': 31, 'end_character': 437, 'bleu_score': 0.7793665988310531, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4525861565560555492}, 'section': 'Section::::History.:New Coke.\n'}]}]