Question: who sings with darius rucker on wagon wheel
[{'answer': 'Lady Antebellum', 'provenance': [{'wikipedia_id': '6753816', 'title': 'Wagon Wheel (song)', 'start_paragraph_id': 36, 'start_character': 59, 'end_paragraph_id': 36, 'end_character': 74, 'bleu_score': 1.0, 'section': 'Section::::Darius Rucker version.:Backstory.\n'}]}, {'provenance': [{'wikipedia_id': '6753816', 'title': 'Wagon Wheel (song)', 'start_paragraph_id': 33, 'start_character': 0, 'end_paragraph_id': 33, 'end_character': 500, 'bleu_score': 0.9287095170391281, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10820756209014316543}, 'section': 'Section::::Darius Rucker version.\n'}]}]