user: Question: Which T.C. has a Year larger than 2007, and a D.C. of 21st?
Columns: ['Year', 'Drivers', 'Races', 'Wins', 'Poles', 'F.L.', 'Points', 'D.C.', 'T.C.']
Types: ['real', 'text', 'real', 'real', 'real', 'real', 'real', 'text', 'text']
Sample row: [2005.0, 'Neel Jani', 23.0, 2.0, 1.0, 0.0, 48.0, '7th', '5th']
SQL:

assistant: SELECT "T.C." FROM "Table" WHERE "Year" > 2007.0 AND "D.C." = '21st';