Question: who sang i got a brand new pair of rollerskates
[{'answer': 'folk music singer Melanie', 'provenance': [{'wikipedia_id': '7770770', 'title': 'Brand New Key', 'start_paragraph_id': 1, 'start_character': 50, 'end_paragraph_id': 1, 'end_character': 75, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7770770', 'title': 'Brand New Key', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 487, 'bleu_score': 0.7816356588699811, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2368306110859312977}, 'section': 'Section::::Abstract.'}]}]