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

Context : Casey's Shadow is a 1978 drama Metrocolor film directed by Martin Ritt and starring Walter Matthau.
Question : Who are the cast members of Casey's Shadow?
Walter Matthau

Context : The Neutronium Alchemist is a science fiction novel by Peter F. Hamilton and is the second book in The Night's Dawn Trilogy.
Question : To which series does The Neutronium Alchemist belong?
The Night's Dawn Trilogy

Context : Vice Admiral Russell Willson (December 27, 1883, Fredonia, New York -- June 6, 1948, Chevy Chase, Maryland) was a flag officer of the United States Navy and inventor of the Navy Cipher Box (also called 'Naval Cipher Box' or 'Navy Code Box') issued in 1917.
Question : What military branch is Russell Willson?
United States Navy