Question: who plays prince caspian in the chronicles of narnia
[{'answer': 'Ben Barnes', 'provenance': [{'wikipedia_id': '1882179', 'title': 'The Chronicles of Narnia: Prince Caspian', 'start_paragraph_id': 1, 'start_character': 524, 'end_paragraph_id': 1, 'end_character': 534, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1882179', 'title': 'The Chronicles of Narnia: Prince Caspian', 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 1322, 'bleu_score': 0.98035537303936, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7584193621439359431}, 'section': 'Section::::Cast.\n'}]}]