Question: when did dungeons & dragons first come out
[{'answer': '1974', 'provenance': [{'wikipedia_id': '7940', 'title': 'Dungeons & Dragons', 'start_paragraph_id': 1, 'start_character': 180, 'end_paragraph_id': 1, 'end_character': 184, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7940', 'title': 'Dungeons & Dragons', 'start_paragraph_id': 1, 'start_character': 9, 'end_paragraph_id': 1, 'end_character': 560, 'bleu_score': 0.9125472678170051, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7622388871146079433}, 'section': 'Section::::Abstract.'}]}]