Question: who sang these boots were made for walking first
[{'answer': 'Nancy Sinatra', 'provenance': [{'wikipedia_id': '1457187', 'title': "These Boots Are Made for Walkin'", 'start_paragraph_id': 1, 'start_character': 89, 'end_paragraph_id': 1, 'end_character': 102, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1457187', 'title': "These Boots Are Made for Walkin'", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 219, 'bleu_score': 0.9517713210466091, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10088031556516043893}, 'section': 'Section::::Abstract.'}]}]