Question: how many gears does a 2003 yz450f have
[{'answer': '4', 'provenance': [{'wikipedia_id': '11214440', 'title': 'Yamaha YZ450F', 'start_paragraph_id': 0, 'start_character': 9, 'end_paragraph_id': 0, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]