Question: who ends up being the killer in scream
[{'answer': 'both Billy and Stu', 'provenance': [{'wikipedia_id': '4288756', 'title': 'Ghostface (identity)', 'start_paragraph_id': 8, 'start_character': 726, 'end_paragraph_id': 8, 'end_character': 744, 'bleu_score': 1.0, 'section': 'Section::::Appearances.:Films.\n'}]}, {'provenance': [{'wikipedia_id': '4288756', 'title': 'Ghostface (identity)', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 1509, 'bleu_score': 0.9919190263443141, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4988009174789394115}, 'section': 'Section::::Appearances.:Films.\n'}]}]