Question: what is the next song of ice and fire book
[{'answer': 'The Winds of Winter', 'provenance': [{'wikipedia_id': '27795131', 'title': 'The Winds of Winter', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '27795131', 'title': 'The Winds of Winter', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 124, 'bleu_score': 0.6969824551964281, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4803271641350637559}, 'section': 'Section::::Abstract.'}]}]