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

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

Context : Irina Malkova (born 23 March 1989) is a Russian female volleyball player. 
Question : What kind of  occupation does Irina Malkova have?
volleyball player

Context : ``How Betty Got Her Grieve Back'' is the season two premiere of dramedy series Ugly Betty. 
Question : What is the series that How Betty Got Her Grieve Back is a part of?

Ugly Betty