Question: who kills agent stahl on sons of anarchy
[{'answer': 'Opie', 'provenance': [{'wikipedia_id': '25336204', 'title': 'June Stahl', 'start_paragraph_id': 4, 'start_character': 1018, 'end_paragraph_id': 4, 'end_character': 1022, 'bleu_score': 1.0, 'section': 'Section::::Biography.:Season 1.\n'}]}, {'provenance': [{'wikipedia_id': '25336204', 'title': 'June Stahl', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 692, 'bleu_score': 0.8322543203323011, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9265018259741732459}, 'section': 'Section::::Biography.:Season 3.\n'}]}]