user: Question: What is the episode number of the episode that originally aired on February 4, 2008?
Columns: ['Production no.', 'Episode no.', 'Original Airdate', 'Episode Title', 'Host']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [15.0, 201.0, 'January 28, 2008', '"Underground Apocalypse"', 'Don Wildman']
SQL:

assistant: SELECT "Episode no." FROM "Table" WHERE "Original Airdate" = 'February 4, 2008';