Question: when did the del mar fair change its name
[{'answer': '2002', 'provenance': [{'wikipedia_id': '7572871', 'title': 'San Diego County Fair', 'start_paragraph_id': 4, 'start_character': 250, 'end_paragraph_id': 4, 'end_character': 254, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '7572871', 'title': 'San Diego County Fair', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 374, 'bleu_score': 0.9699161750394991, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10542228254658721517}, 'section': 'Section::::History.\n'}]}]