Question: who has written the most books in the world
[{'answer': '. Dame Agatha Christie', 'provenance': [{'wikipedia_id': '33167641', 'title': 'List of prolific writers', 'start_paragraph_id': 1, 'start_character': 274, 'end_paragraph_id': 1, 'end_character': 296, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '33167641', 'title': 'List of prolific writers', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 991, 'bleu_score': 0.9878413801697931, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15817788721278800638}, 'section': 'Section::::Abstract.'}]}]