Question: who sang the song bang bang in kill bill
[{'answer': 'Nancy Sinatra', 'provenance': [{'wikipedia_id': '5720175', 'title': 'Bang Bang (My Baby Shot Me Down)', 'start_paragraph_id': 7, 'start_character': 11, 'end_paragraph_id': 7, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::Cover versions.\n'}]}, {'provenance': [{'wikipedia_id': '5720175', 'title': 'Bang Bang (My Baby Shot Me Down)', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 469, 'bleu_score': 0.654283977770444, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3801760390759768168}, 'section': 'Section::::Cover versions.:Nancy Sinatra.\n'}]}]