Question: who sang tie a yellow ribbon round the oak tree
[{'answer': 'Dawn featuring Tony Orlando', 'provenance': [{'wikipedia_id': '7322933', 'title': 'Tie a Yellow Ribbon Round the Ole Oak Tree', 'start_paragraph_id': 14, 'start_character': 32, 'end_paragraph_id': 14, 'end_character': 59, 'bleu_score': 1.0, 'section': 'Section::::Chart and sales performance.\n'}]}]