Question: when did the 4th harry potter book come out
[{'answer': '8 July 2000', 'provenance': [{'wikipedia_id': '259128', 'title': 'Harry Potter and the Goblet of Fire', 'start_paragraph_id': 2, 'start_character': 138, 'end_paragraph_id': 2, 'end_character': 149, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]