user: Question: In what district was incumbent Russ Carnahan elected after 2000?
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Results']
Types: ['text', 'text', 'text', 'real', 'text']
Sample row: ['Missouri 1', 'William Lacy Clay Jr.', 'Democratic', 2000.0, 'Re-elected']
SQL:

assistant: SELECT "District" FROM "Table" WHERE "First elected" > 2000.0 AND "Incumbent" = 'Russ Carnahan';