Question: when did the apple ipad air come out
[{'answer': 'November 1 , 2013', 'provenance': [{'wikipedia_id': '40858550', 'title': 'IPad Air', 'start_paragraph_id': 1, 'start_character': 168, 'end_paragraph_id': 1, 'end_character': 185, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]