Question: when was and then there were none published
[{'answer': '6 November 1939', 'provenance': [{'wikipedia_id': '18949410', 'title': 'And Then There Were None', 'start_paragraph_id': 1, 'start_character': 215, 'end_paragraph_id': 1, 'end_character': 230, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]