Question: who is the writer on once upon a time
[{'answer': 'Edward Kitsis', 'provenance': [{'wikipedia_id': '4704229', 'title': 'Once Upon a Time (TV series)', 'start_paragraph_id': 2, 'start_character': 56, 'end_paragraph_id': 2, 'end_character': 69, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4704229', 'title': 'Once Upon a Time (TV series)', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 293, 'bleu_score': 0.8923575006167591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9820250882837711312}, 'section': 'Section::::Abstract.'}]}]