Question: when did top fuel change to 1000 feet
[{'answer': 'July 2 , 2008', 'provenance': [{'wikipedia_id': '28359457', 'title': 'NHRA Mello Yello Drag Racing Series', 'start_paragraph_id': 6, 'start_character': 3, 'end_paragraph_id': 6, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '28359457', 'title': 'NHRA Mello Yello Drag Racing Series', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 925, 'bleu_score': 0.9052998346903971, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 445727440293065235}, 'section': 'Section::::History.\n'}]}]