Mei Li:
In which year did the Berlin Wall come down??
Shuai Zheng:
1989
Mei Li:
What was Jenson Button's championship-clinching finishing place in the 2009 Brazilian Grand Prix??
Shuai Zheng:
fifth
Mei Li:
Elected to office in November 2008, who is currently the Prime Minister of New Zealand??
Shuai Zheng:
john key