Question: who played the wife in the king's speech
[{'answer': 'Helena Bonham Carter', 'provenance': [{'wikipedia_id': '25080984', 'title': "The King's Speech", 'start_paragraph_id': 79, 'start_character': 328, 'end_paragraph_id': 79, 'end_character': 348, 'bleu_score': 1.0, 'section': 'Section::::Release.:Ratings controversy.\n'}]}]