Question: when did back to the future 3 come out
[{'answer': 'May 25 , 1990', 'provenance': [{'wikipedia_id': '213275', 'title': 'Back to the Future Part III', 'start_paragraph_id': 2, 'start_character': 186, 'end_paragraph_id': 2, 'end_character': 199, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]