Question: when were each of the harry potter books released
[{'answer': '1997', 'provenance': [{'wikipedia_id': '2387806', 'title': 'Harry Potter', 'start_paragraph_id': 2, 'start_character': 93, 'end_paragraph_id': 2, 'end_character': 97, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '1998', 'provenance': [{'wikipedia_id': '2387806', 'title': 'Harry Potter', 'start_paragraph_id': 9, 'start_character': 78, 'end_paragraph_id': 9, 'end_character': 82, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'answer': '1999', 'provenance': [{'wikipedia_id': '2387806', 'title': 'Harry Potter', 'start_paragraph_id': 63, 'start_character': 134, 'end_paragraph_id': 63, 'end_character': 138, 'bleu_score': 1.0, 'section': 'Section::::Origins.:Publishing history.\n'}]}, {'answer': '2000', 'provenance': [{'wikipedia_id': '2387806', 'title': 'Harry Potter', 'start_paragraph_id': 63, 'start_character': 332, 'end_paragraph_id': 63, 'end_character': 336, 'bleu_score': 1.0, 'section': 'Section::::Origins.:Publishing history.\n'}]}, {'answer': '2003', 'provenance': [{'wikipedia_id': '2387806', 'title': 'Harry Potter', 'start_paragraph_id': 63, 'start_character': 576, 'end_paragraph_id': 63, 'end_character': 580, 'bleu_score': 1.0, 'section': 'Section::::Origins.:Publishing history.\n'}]}, {'answer': '2005', 'provenance': [{'wikipedia_id': '2387806', 'title': 'Harry Potter', 'start_paragraph_id': 63, 'start_character': 648, 'end_paragraph_id': 63, 'end_character': 652, 'bleu_score': 1.0, 'section': 'Section::::Origins.:Publishing history.\n'}]}, {'answer': '2007', 'provenance': [{'wikipedia_id': '2387806', 'title': 'Harry Potter', 'start_paragraph_id': 35, 'start_character': 344, 'end_paragraph_id': 35, 'end_character': 348, 'bleu_score': 1.0, 'section': 'Section::::Supplementary works.:In-universe books.\n'}]}]