Question: when will the book of dust be released
[{'answer': 'October 2017', 'provenance': [{'wikipedia_id': '602429', 'title': 'The Book of Dust', 'start_paragraph_id': 2, 'start_character': 53, 'end_paragraph_id': 2, 'end_character': 65, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]