Question: who wrote the world of ice and fire
[{'answer': 'George R.R. Martin'}, {'provenance': [{'wikipedia_id': '34682119', 'title': 'The World of Ice & Fire', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 447, 'bleu_score': 0.8626751395260611, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16303726575555745263}, 'section': 'Section::::Abstract.'}]}]