Question: when was roald dahl's first book published
[{'answer': '1943', 'provenance': [{'wikipedia_id': '49435374', 'title': 'Roald Dahl bibliography', 'start_paragraph_id': 2, 'start_character': 752, 'end_paragraph_id': 2, 'end_character': 756, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '49435374', 'title': 'Roald Dahl bibliography', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 1360, 'bleu_score': 0.9913976496751131, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14712177246690903408}, 'section': 'Section::::Abstract.'}]}]