Question: when does the regular nba 2k18 come out
[{'answer': 'September 2017'}, {'provenance': [{'wikipedia_id': '49932170', 'title': 'NBA 2K18', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 903, 'bleu_score': 0.714504696312052, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11803670321351582060}, 'section': 'Section::::Abstract.'}]}]