Question: who killed the girl in mystic river movie
[{'answer': "his friend John O'Shea", 'provenance': [{'wikipedia_id': '460052', 'title': 'Mystic River (film)', 'start_paragraph_id': 9, 'start_character': 139, 'end_paragraph_id': 9, 'end_character': 161, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'answer': "Brendan 's brother , `` Silent Ray '' Harris"}, {'provenance': [{'wikipedia_id': '460052', 'title': 'Mystic River (film)', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 876, 'bleu_score': 0.8000302178192601, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4692181111646420474}, 'section': 'Section::::Plot.\n'}]}]