Question: when did the latest kindle paperwhite come out
[{'answer': 'June 30 , 2015', 'provenance': [{'wikipedia_id': '14312829', 'title': 'Amazon Kindle', 'start_paragraph_id': 64, 'start_character': 170, 'end_paragraph_id': 64, 'end_character': 184, 'bleu_score': 1.0, 'section': 'Section::::Devices.:Seventh generation.:Kindle Paperwhite (3rd generation).\n'}]}, {'provenance': [{'wikipedia_id': '14312829', 'title': 'Amazon Kindle', 'start_paragraph_id': 64, 'start_character': 0, 'end_paragraph_id': 64, 'end_character': 841, 'bleu_score': 0.9462906167661501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11081937372781169501}, 'section': 'Section::::Devices.:Seventh generation.:Kindle Paperwhite (3rd generation).\n'}]}]