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

Context : Ishi died of tuberculosis on March 25, 1916. 
Question : What medical condition did Ishi have?
tuberculosis

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

Context : Solar Pons is a fictional detective created by August Derleth as a pastiche (imitation) of Arthur Conan Doyle's Sherlock Holmes. 
Question : The Solar Pons is based upon what?

Sherlock Holmes