Question: when did the last episode of naruto air
[{'answer': 'December 6 , 2009', 'provenance': [{'wikipedia_id': '2137845', 'title': 'List of Naruto episodes', 'start_paragraph_id': 3, 'start_character': 362, 'end_paragraph_id': 3, 'end_character': 379, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]