Question: who played charles dickens in the man who invented christmas
[{'answer': 'Dan Stevens', 'provenance': [{'wikipedia_id': '52243430', 'title': 'The Man Who Invented Christmas (film)', 'start_paragraph_id': 1, 'start_character': 182, 'end_paragraph_id': 1, 'end_character': 193, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]