Question: when did the iphone 5 first come out
[{'answer': 'September 21 , 2012', 'provenance': [{'wikipedia_id': '33304644', 'title': 'IPhone 5', 'start_paragraph_id': 3, 'start_character': 180, 'end_paragraph_id': 3, 'end_character': 199, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '33304644', 'title': 'IPhone 5', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 526, 'bleu_score': 0.9627395327463101, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16906399588795760413}, 'section': 'Section::::Abstract.'}]}]