Question: how often do they make a new iphone
[{'answer': 'every year', 'provenance': [{'wikipedia_id': '8841749', 'title': 'IPhone', 'start_paragraph_id': 44, 'start_character': 108, 'end_paragraph_id': 44, 'end_character': 118, 'bleu_score': 1.0, 'section': 'Section::::History and availability.:iPhone Upgrade Program.\n'}]}, {'provenance': [{'wikipedia_id': '8841749', 'title': 'IPhone', 'start_paragraph_id': 44, 'start_character': 0, 'end_paragraph_id': 44, 'end_character': 601, 'bleu_score': 0.88904449755421, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3225933509294150114}, 'section': 'Section::::History and availability.:iPhone Upgrade Program.\n'}]}]