Question: when did joseph smith publish the book of mormon
[{'answer': 'March 1830', 'provenance': [{'wikipedia_id': '3978', 'title': 'Book of Mormon', 'start_paragraph_id': 1, 'start_character': 232, 'end_paragraph_id': 1, 'end_character': 242, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3978', 'title': 'Book of Mormon', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 366, 'bleu_score': 0.9699161750394991, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17761849696286602990}, 'section': 'Section::::Abstract.'}]}]