Question: who sang the theme song for you only live twice
[{'answer': 'Nancy Sinatra', 'provenance': [{'wikipedia_id': '24991634', 'title': 'You Only Live Twice (song)', 'start_paragraph_id': 1, 'start_character': 36, 'end_paragraph_id': 1, 'end_character': 49, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '24991634', 'title': 'You Only Live Twice (song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 603, 'bleu_score': 0.8697735010640031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9493123583732509715}, 'section': 'Section::::Abstract.'}]}]