Question: who is darrell brother in the walking dead
[{'answer': 'Merle Dixon', 'provenance': [{'wikipedia_id': '37571771', 'title': 'Merle Dixon', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '37571771', 'title': 'Merle Dixon', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 751, 'bleu_score': 0.9839344367380701, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8708126467807256185}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '36827870', 'title': 'Walk with Me (The Walking Dead)', 'section': 'Section::::Plot.\n', 'start_paragraph_id': 3, 'end_paragraph_id': 3, 'meta': {'evidence_span': ["Andrea is surprised one of the men is Merle (Michael Rooker), Daryl's brother", "Andrea is surprised one of the men is Merle (Michael Rooker), Daryl's brother who Rick's group had left handcuffed to piping atop an Atlanta skyscraper"]}}]}]