Question: when did the i phone 6 s come out
[{'answer': 'September 9 , 2015', 'provenance': [{'wikipedia_id': '42259842', 'title': 'IPhone 6', 'start_paragraph_id': 9, 'start_character': 3, 'end_paragraph_id': 9, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '42259842', 'title': 'IPhone 6', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 591, 'bleu_score': 0.8659155572489841, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13292455138439913241}, 'section': 'Section::::Abstract.'}]}]