Question: who played boo in to kill a mockingbird
[{'answer': 'Robert Duvall', 'provenance': [{'wikipedia_id': '8355369', 'title': 'List of To Kill a Mockingbird characters', 'start_paragraph_id': 24, 'start_character': 355, 'end_paragraph_id': 24, 'end_character': 368, 'bleu_score': 1.0, 'section': 'Section::::Primary characters.:Boo Radley.\n'}]}, {'provenance': [{'wikipedia_id': '8355369', 'title': 'List of To Kill a Mockingbird characters', 'start_paragraph_id': 24, 'start_character': 0, 'end_paragraph_id': 24, 'end_character': 380, 'bleu_score': 0.9731482306711111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10230651728107831383}, 'section': 'Section::::Primary characters.:Boo Radley.\n'}]}]