Question: 他们什么时候推倒的柏林墙
Answer: 1989 十一月 9; 1989-11-09; 09-11-1989; 09 11 1989; 11 09 1989; 1989 十一月 09; 09 十一月 1989; 09/11/1989; 11/09/1989; 1989 november, 09; 1989 11 09; 11-09-1989; 1989-11-09; 1989-11-09; 09-11-1989; 09 11 1989; 11 09 1989; 1989 十一月 09; 09 十一月 1989; 09/11/1989; 11/09/1989; 1989 november, 09; 1989 11 09; 11-09-1989