Question: who plays katara in the last airbender movie
[{'answer': 'Nicola Peltz', 'provenance': [{'wikipedia_id': '16963505', 'title': 'The Last Airbender', 'start_paragraph_id': 2, 'start_character': 71, 'end_paragraph_id': 2, 'end_character': 83, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]