user: Question: What is Viewers, when Air Date is "July 4, 2008"?
Columns: ['Air Date', 'Rating', '18-49', 'Viewers', 'Weekly Winner']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['June 27, 2008', 'TBA', '1.0/4 (#3)', '3.76 (#4)', 'Mixed Martial Artist Jeff Kelley']
SQL:

assistant: SELECT "Viewers" FROM "Table" WHERE "Air Date" = 'July 4, 2008';