Question: when did the first i phone came out
[{'answer': 'June 29 , 2007', 'provenance': [{'wikipedia_id': '27761763', 'title': 'IPhone (1st generation)', 'start_paragraph_id': 11, 'start_character': 48, 'end_paragraph_id': 11, 'end_character': 64, 'bleu_score': 1.0, 'section': 'Section::::Release.\n'}]}]