Question: who won the best picture in the oscars
[{'answer': 'The Shape of Water', 'provenance': [{'wikipedia_id': '61702', 'title': 'Academy Award for Best Picture', 'start_paragraph_id': 28, 'start_character': 512, 'end_paragraph_id': 28, 'end_character': 530, 'bleu_score': 1.0, 'section': 'Section::::History.:Controversies.\n'}]}]