Question: when did hot wheels start super treasure hunts
[{'answer': '2007', 'provenance': [{'wikipedia_id': '499012', 'title': 'Hot Wheels', 'start_paragraph_id': 46, 'start_character': 11, 'end_paragraph_id': 46, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::History.:2005.\n'}]}]