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

Context : John Anthony Walker, Jr. (July 28, 1937 -- August 28, 2014) was a United States Navy Chief Warrant Officer and communications specialist convicted of spying for the Soviet Union from 1968 to 1985. 
Question : What armed force was John Anthony Walker in?
United States Navy

Context : Carl Ferdinand Cori, ForMemRS (December 5, 1896 -- October 20, 1984) was a Czech biochemist and pharmacologist born in Prague (then in Austria-Hungary, now Czech Republic) who, together with his wife Gerty Cori and Argentine physiologist Bernardo Houssay, received a Nobel Prize in 1947 for their discovery of how glycogen (animal starch) -- a derivative of glucose -- is broken down and resynthesized in the body, for use as a store and source of energy. 
Question : What is Carl Ferdinand Cori's spouse's name?
Gerty Cori

Context : A Drunkard's Reformation is a 1909 American drama film directed by D. W. Griffith. 
Question : The main director of A Drunkard's Reformation was who?

D. W. Griffith