Question: who played the kray brothers in the film
[{'answer': 'Tom Hardy', 'provenance': [{'wikipedia_id': '43033675', 'title': 'Legend (2015 film)', 'start_paragraph_id': 2, 'start_character': 40, 'end_paragraph_id': 2, 'end_character': 49, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '43033675', 'title': 'Legend (2015 film)', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 72, 'bleu_score': 0.8070557274927981, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2772465867689151226}, 'section': 'Section::::Cast.\n'}]}]