Question: when did the i phone 8 plus come out
[{'answer': 'September 22 , 2017', 'provenance': [{'wikipedia_id': '55040042', 'title': 'IPhone 8', 'start_paragraph_id': 5, 'start_character': 218, 'end_paragraph_id': 5, 'end_character': 237, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '55040042', 'title': 'IPhone 8', 'start_paragraph_id': 1, 'start_character': 11, 'end_paragraph_id': 1, 'end_character': 348, 'bleu_score': 0.8367663548449731, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10317701851247352285}, 'section': 'Section::::Abstract.'}]}]