Question: the death of stalin cast who plays stalin
[{'answer': 'Adrian McLoughlin', 'provenance': [{'wikipedia_id': '50525028', 'title': 'The Death of Stalin', 'start_paragraph_id': 1, 'start_character': 361, 'end_paragraph_id': 1, 'end_character': 378, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '50525028', 'title': 'The Death of Stalin', 'start_paragraph_id': 20, 'start_character': 0, 'end_paragraph_id': 20, 'end_character': 46, 'bleu_score': 0.6147881529512641, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 402049382954826538}, 'section': 'Section::::Cast.\n'}]}]