Question: when did the 2nd generation ipad come out
[{'answer': 'March 25 , 2011', 'provenance': [{'wikipedia_id': '30209619', 'title': 'IPad 2', 'start_paragraph_id': 10, 'start_character': 65, 'end_paragraph_id': 10, 'end_character': 80, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '30209619', 'title': 'IPad 2', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 355, 'bleu_score': 0.957870874785216, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9125478923860858807}, 'section': 'Section::::History.\n'}]}]