Question: who starred in the movie to kill a mockingbird
[{'answer': 'Gregory Peck', 'provenance': [{'wikipedia_id': '4607980', 'title': 'To Kill a Mockingbird (film)', 'start_paragraph_id': 1, 'start_character': 198, 'end_paragraph_id': 1, 'end_character': 210, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Mary Badham', 'provenance': [{'wikipedia_id': '4607980', 'title': 'To Kill a Mockingbird (film)', 'start_paragraph_id': 1, 'start_character': 232, 'end_paragraph_id': 1, 'end_character': 243, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Phillip Alford', 'provenance': [{'wikipedia_id': '4607980', 'title': 'To Kill a Mockingbird (film)', 'start_paragraph_id': 15, 'start_character': 12, 'end_paragraph_id': 15, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}, {'answer': 'John Megna', 'provenance': [{'wikipedia_id': '4607980', 'title': 'To Kill a Mockingbird (film)', 'start_paragraph_id': 16, 'start_character': 12, 'end_paragraph_id': 16, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}, {'answer': 'Ruth White', 'provenance': [{'wikipedia_id': '4607980', 'title': 'To Kill a Mockingbird (film)', 'start_paragraph_id': 19, 'start_character': 12, 'end_paragraph_id': 19, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}, {'answer': 'Paul Fix', 'provenance': [{'wikipedia_id': '4607980', 'title': 'To Kill a Mockingbird (film)', 'start_paragraph_id': 22, 'start_character': 12, 'end_paragraph_id': 22, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::Cast.\n'}]}, {'answer': 'Brock Peters', 'provenance': [{'wikipedia_id': '4607980', 'title': 'To Kill a Mockingbird (film)', 'start_paragraph_id': 50, 'start_character': 384, 'end_paragraph_id': 50, 'end_character': 396, 'bleu_score': 1.0, 'section': 'Section::::Critical response.\n'}]}, {'answer': 'Frank Overton', 'provenance': [{'wikipedia_id': '4607980', 'title': 'To Kill a Mockingbird (film)', 'start_paragraph_id': 50, 'start_character': 424, 'end_paragraph_id': 50, 'end_character': 437, 'bleu_score': 1.0, 'section': 'Section::::Critical response.\n'}]}]