Question: bears 上一次参加超级碗是什么时候
Answer: 2006; 2006; 2007-02-04; 2007 02 04; 2007-02-04; 2007 2月 04; 04 2月 2007; 02-04-2007; 2007 february, 04; 02 04 2007; 04/02/2007; 04-02-2007; 04 02 2007; 02/04/2007