Question: when was the book matilda by roald dahl published
[{'answer': '1988', 'provenance': [{'wikipedia_id': '472089', 'title': 'Matilda (novel)', 'start_paragraph_id': 1, 'start_character': 68, 'end_paragraph_id': 1, 'end_character': 72, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '472089', 'title': 'Matilda (novel)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 442, 'bleu_score': 0.974188104609039, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6353263214130384860}, 'section': 'Section::::Abstract.'}]}]