Question: who played the bishop in the bishop's wife
[{'answer': 'David Niven', 'provenance': [{'wikipedia_id': '80510', 'title': "The Bishop's Wife", 'start_paragraph_id': 1, 'start_character': 161, 'end_paragraph_id': 1, 'end_character': 172, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '80510', 'title': "The Bishop's Wife", 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 48, 'bleu_score': 0.6803749333171201, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16278229012750804349}, 'section': 'Section::::Cast.\n'}]}]