Question: when did the i pad 4 come out
[{'answer': 'November 2 , 2012', 'provenance': [{'wikipedia_id': '37422341', 'title': 'IPad (4th generation)', 'start_paragraph_id': 2, 'start_character': 128, 'end_paragraph_id': 2, 'end_character': 145, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]