Mei Li:
Who is the mother of Samuel West, the actor whose film roles include Leonard Bast in Howard's End??
Shuai Zheng:
prunella scales
Mei Li:
What is the name of the lustrous substance that forms pearl and mother-of-pearl??
Shuai Zheng:
nacre
Mei Li:
Which EU country has the greatest population??
Shuai Zheng:
germany