Question: when did pubg mobile come out in china
[{'answer': 'February 9 , 2018', 'provenance': [{'wikipedia_id': '53318656', 'title': "PlayerUnknown's Battlegrounds", 'start_paragraph_id': 33, 'start_character': 630, 'end_paragraph_id': 33, 'end_character': 647, 'bleu_score': 1.0, 'section': 'Section::::Release.:Mobile versions.\n'}]}, {'provenance': [{'wikipedia_id': '53318656', 'title': "PlayerUnknown's Battlegrounds", 'start_paragraph_id': 33, 'start_character': 0, 'end_paragraph_id': 33, 'end_character': 946, 'bleu_score': 0.951970822989707, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 997860462596411203}, 'section': 'Section::::Release.:Mobile versions.\n'}]}]