Question: who killed glenn in the walking dead comics
[{'answer': 'Negan', 'provenance': [{'wikipedia_id': '35021558', 'title': 'Glenn Rhee', 'start_paragraph_id': 2, 'start_character': 789, 'end_paragraph_id': 2, 'end_character': 794, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '35021558', 'title': 'Glenn Rhee', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 819, 'bleu_score': 0.9683237089750321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10428368859929486582}, 'section': 'Section::::Abstract.'}]}]