Question: who plays belle in beauty and the beast movie
[{'answer': 'Emma Watson', 'provenance': [{'wikipedia_id': '45230258', 'title': 'Beauty and the Beast (2017 film)', 'start_paragraph_id': 1, 'start_character': 511, 'end_paragraph_id': 1, 'end_character': 522, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]