user: Question: Who directed the epsiode with production number 109?
Columns: ['Episode #', 'Prod #', 'Title', 'Directed by', 'Written by', 'Originalairdate', 'Filmed']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 106.0, '"State Visit"', 'John Moxey', "Jim O'Connolly", '18 March 1965', 'Aug/Sept 1964']
SQL:

assistant: SELECT "Directed by" FROM "Table" WHERE "Prod #" = 109.0;