Question: when was the last time the raiders won the afc west
[{'answer': '2002', 'provenance': [{'wikipedia_id': '1952071', 'title': 'AFC West', 'start_paragraph_id': 7, 'start_character': 152, 'end_paragraph_id': 7, 'end_character': 156, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}]