Question: when was the iphone se released in the us
[{'answer': 'March 31 , 2016', 'provenance': [{'wikipedia_id': '49597836', 'title': 'IPhone SE', 'start_paragraph_id': 1, 'start_character': 339, 'end_paragraph_id': 1, 'end_character': 354, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]