Question: when did charles dickens start to write books
[{'answer': '1836', 'provenance': [{'wikipedia_id': '5884', 'title': 'Charles Dickens', 'start_paragraph_id': 3, 'start_character': 42, 'end_paragraph_id': 3, 'end_character': 46, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5884', 'title': 'Charles Dickens', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 1099, 'bleu_score': 0.9880591662583851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10518842365089994229}, 'section': 'Section::::Abstract.'}]}]