Question: when did the milky way midnight come out
[{'answer': '1989', 'provenance': [{'wikipedia_id': '1613163', 'title': 'Milky Way (chocolate bar)', 'start_paragraph_id': 5, 'start_character': 405, 'end_paragraph_id': 5, 'end_character': 409, 'bleu_score': 1.0, 'section': 'Section::::American version.\n'}]}, {'provenance': [{'wikipedia_id': '1613163', 'title': 'Milky Way (chocolate bar)', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 501, 'bleu_score': 0.977139080690077, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10088360463054016432}, 'section': 'Section::::American version.\n'}]}]