Question: who sang the original cotton eye joe song
[{'answer': 'unclear', 'provenance': [{'wikipedia_id': '2354188', 'title': 'Cotton-Eyed Joe', 'start_paragraph_id': 4, 'start_character': 29, 'end_paragraph_id': 4, 'end_character': 36, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '2354188', 'title': 'Cotton-Eyed Joe', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 870, 'bleu_score': 0.927302012583425, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17905690610406746330}, 'section': 'Section::::History.\n'}]}]