Question: who is the voice of aurora in sleeping beauty
[{'answer': 'Mary Costa', 'provenance': [{'wikipedia_id': '2287636', 'title': 'Sleeping Beauty (1959 film)', 'start_paragraph_id': 2, 'start_character': 26, 'end_paragraph_id': 2, 'end_character': 36, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]