Question: when did the lord of the rings books come out
[{'answer': '29 July 1954', 'provenance': [{'wikipedia_id': '29798', 'title': 'The Lord of the Rings', 'start_paragraph_id': 3, 'start_character': 321, 'end_paragraph_id': 3, 'end_character': 333, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '11 November 1954', 'provenance': [{'wikipedia_id': '29798', 'title': 'The Lord of the Rings', 'start_paragraph_id': 79, 'start_character': 462, 'end_paragraph_id': 79, 'end_character': 478, 'bleu_score': 1.0, 'section': 'Section::::Publication history.\n'}]}, {'answer': '20 October 1955', 'provenance': [{'wikipedia_id': '29798', 'title': 'The Lord of the Rings', 'start_paragraph_id': 3, 'start_character': 337, 'end_paragraph_id': 3, 'end_character': 352, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]