Question: what year did once upon a time come out
[{'answer': '2011', 'provenance': [{'wikipedia_id': '4704229', 'title': 'Once Upon a Time (TV series)', 'start_paragraph_id': 1, 'start_character': 100, 'end_paragraph_id': 1, 'end_character': 104, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]