Problem: On television who played Dr Elizabeth Corday in the medical drama ER, and River Song in Dr Who?
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A: alex kingston

Q: Which BBC Director General was appointed and resigned in 2012?
A: george entwhistle

Problem: Which character in a musical is based on the famous early 20th century gambler Titanic Thompson?
Answer: sky masterson

Q: What is the lightest solid element?
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A: lithium

Q: Powdered wool or cloth in certain wallpapers?
What is the answer?

A: flock

Mei Li:
The Fields Medal is awarded every four years in which discipline??
Shuai Zheng:
mathematics