Question: when did jk rowling write her first book
[{'answer': '1997', 'provenance': [{'wikipedia_id': '16027', 'title': 'J. K. Rowling', 'start_paragraph_id': 2, 'start_character': 477, 'end_paragraph_id': 2, 'end_character': 481, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '16027', 'title': 'J. K. Rowling', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 857, 'bleu_score': 0.90461897280973, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7211637972537609203}, 'section': 'Section::::Abstract.'}]}]