Question: when did the iphone 5s first come out
[{'answer': 'September 20 , 2013', 'provenance': [{'wikipedia_id': '33409740', 'title': 'IPhone 5S', 'start_paragraph_id': 27, 'start_character': 61, 'end_paragraph_id': 27, 'end_character': 80, 'bleu_score': 1.0, 'section': 'Section::::Specifications.:Operating system and software.\n'}]}, {'provenance': [{'wikipedia_id': '33409740', 'title': 'IPhone 5S', 'start_paragraph_id': 1, 'start_character': 11, 'end_paragraph_id': 1, 'end_character': 354, 'bleu_score': 0.7425666151876, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14756878514568225205}, 'section': 'Section::::Abstract.'}]}]