Question: when did marty mcfly go to the future in 2015
[{'answer': 'October 26 , 1985', 'provenance': [{'wikipedia_id': '213270', 'title': 'Back to the Future Part II', 'start_paragraph_id': 5, 'start_character': 3, 'end_paragraph_id': 5, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '213270', 'title': 'Back to the Future Part II', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 599, 'bleu_score': 0.8286448218126241, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2953249927927893813}, 'section': 'Section::::Plot.\n'}]}]