Question: who played in sherlock holmes the movie 2009
[{'answer': 'Robert Downey Jr.', 'provenance': [{'wikipedia_id': '19596597', 'title': 'Sherlock Holmes (2009 film)', 'start_paragraph_id': 1, 'start_character': 374, 'end_paragraph_id': 1, 'end_character': 391, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '19596597', 'title': 'Sherlock Holmes (2009 film)', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 1378, 'bleu_score': 0.991614070700718, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12190683715896897926}, 'section': 'Section::::Cast.\n'}]}]