user: Question: What's the series number of the episode with a broadcast order S04 E07?
Columns: ['Number in series', 'Broadcast Order', 'Title', 'Villain/s', 'U.S. Air Date', 'Production Code']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [40.0, 'S04 E01', '"Don\'t Touch That Dial" "Episode 257-494"', 'Control Freak', 'January 15, 2005', '257–494']
SQL:

assistant: SELECT "Number in series" FROM "Table" WHERE "Broadcast Order" = 'S04 E07';