Question: when did the macbook touch bar come out
[{'answer': 'October 27 , 2016', 'provenance': [{'wikipedia_id': '3677824', 'title': 'MacBook Pro', 'start_paragraph_id': 54, 'start_character': 114, 'end_paragraph_id': 54, 'end_character': 131, 'bleu_score': 1.0, 'section': 'Section::::Fourth generation (Touch Bar and USB-C).\n'}]}]