Generate a correct and concise answer for the question based on the words in the context.

[EX Q]: Context : Sigmund Selberg (11 August 1910 -- 20 April 1994) was a Norwegian mathematician.
Question : What was Sigmund Selberg's occupation?
[EX A]: mathematician

[EX Q]: Context : Traitor or Patriot (Original French-language title: Traitre ou Patriote) is a Quebec documentary produced by the National Film Board of Canada (NFB) in 2000.
Question : What studio produced Traitor or Patriot?
[EX A]: National Film Board of Canada

[EX Q]: Context : David Ibbetson obtained his MA and PhD in Law at Corpus Christi College, Cambridge.
Question : The college David Ibbetson attended was what?
[EX A]:
Corpus Christi College