Question: who wrote the picture of dorian grey in 1891
[{'answer': 'Oscar Wilde', 'provenance': [{'wikipedia_id': '31342', 'title': 'The Picture of Dorian Gray', 'start_paragraph_id': 1, 'start_character': 66, 'end_paragraph_id': 1, 'end_character': 77, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]