Question: what was the first year for the chevy duramax
[{'answer': '2001', 'provenance': [{'wikipedia_id': '904367', 'title': 'Duramax V8 engine', 'start_paragraph_id': 1, 'start_character': 301, 'end_paragraph_id': 1, 'end_character': 305, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '904367', 'title': 'Duramax V8 engine', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 612, 'bleu_score': 0.847437576130402, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12736317765995799037}, 'section': 'Section::::Abstract.'}]}]