Problem: The following were influential in developing which subject in China: Liu Hui, Zu Geng, Li Chunfeng, Yang Hui, Shen Kuo, Liu Xin, Zhang Heng, Liu Hui, Zu Chongzhi and Wang Xiaotong?
======
A: mathematics

Q: Who directed the 1973 film 'Serpico'?
A: sidney lumet

Problem: In which month of 1945 did the USA drop the atom bomb on Hiroshima and Nagasaki ?
Answer: august

Q: Havarti, Limburger, Fontina, and Edam are all types of what?
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A: cheese

Q: Who played Batman immediately before George Clooney?
What is the answer?

A: val kilmer

Problem: Who brought a legal suit against Michael Jackson in early 2009 claiming a share of profits from the Thriller video?
======
A:
john landis