Question: when did the first ys game come out
[{'answer': '1987', 'provenance': [{'wikipedia_id': '359846', 'title': 'Ys (series)', 'start_paragraph_id': 17, 'start_character': 194, 'end_paragraph_id': 17, 'end_character': 198, 'bleu_score': 1.0, 'section': 'Section::::Games.\n'}]}]