user: Question: Who were the Opponents in the final that played on a Carpet (i) Surface?
Columns: ['Tournament', 'Surface', 'Partner', 'Opponents in the final', 'Score in the final']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Freudenstadt', 'Clay', 'Tomas Behrend', 'Alexandre Sidorenko Mischa Zverev', '7–5, 7–6 5']
SQL:

assistant: SELECT "Opponents in the final" FROM "Table" WHERE "Surface" = 'Carpet (i)';