Question: which movie won the best picture award at 89th oscar academy award held in 2017
[{'answer': 'Moonlight', 'provenance': [{'wikipedia_id': '49329502', 'title': '89th Academy Awards', 'start_paragraph_id': 3, 'start_character': 23, 'end_paragraph_id': 3, 'end_character': 32, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]