Question: who does helen mccrory play in peaky blinders
[{'answer': 'Polly Gray', 'provenance': [{'wikipedia_id': '2657339', 'title': 'Helen McCrory', 'start_paragraph_id': 2, 'start_character': 333, 'end_paragraph_id': 2, 'end_character': 343, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2657339', 'title': 'Helen McCrory', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 418, 'bleu_score': 0.903855360178015, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3185130563831419310}, 'section': 'Section::::Abstract.'}]}]