Question: who is the princess in prince of persia
[{'answer': 'Gemma Arterton', 'provenance': [{'wikipedia_id': '5866831', 'title': 'Prince of Persia: The Sands of Time (film)', 'start_paragraph_id': 1, 'start_character': 316, 'end_paragraph_id': 1, 'end_character': 330, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5866831', 'title': 'Prince of Persia: The Sands of Time (film)', 'start_paragraph_id': 16, 'start_character': 0, 'end_paragraph_id': 16, 'end_character': 56, 'bleu_score': 0.725979529115477, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1248826254054023263}, 'section': 'Section::::Cast.\n'}]}]