user: Question: when did "Unpleasantville" air?
Columns: ['No. in series', 'No. in season', 'Title', 'Director', 'Writer(s)', 'Original air date', 'Production code']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: [192.0, 1.0, '"Divorce Dominican Style"', 'Chip Chalmers', 'Carol Mendelsohn', 'July27,1998', '2397184']
SQL:

assistant: SELECT "Original air date" FROM "Table" WHERE "Title" = '"Unpleasantville"';