user: Question: how many times was the episode directed by Maury Geraghty originally aired? 
Columns: ['Episode #', 'Prod #', 'Title', 'Directed by', 'Written by', 'Originalairdate']
Types: ['real', 'real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 102.0, '"Episode in Bathurst"', 'Peter Maxwell', 'Gene Roddenberry', '10 September 1960']
SQL:

assistant: SELECT COUNT("Originalairdate") FROM "Table" WHERE "Directed by" = 'Maury Geraghty';