Question: the steelers上一次进入超级碗比赛是什么时候
Answer: 2011-02-06; 2011-02-06; 06-02-2011; 06 2月 2011; 2011 february, 06; 02-06-2011; 02 06 2011; 06 02 2011; 06/02/2011; 2011 02 06; 2011 2月 06; 02/06/2011