user: Question: Which surface has Wynne Prakusya as the opponent in the final?
Columns: ['Date', 'Tournament', 'Surface', 'Opponent in the Final', 'Score']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Oct. 2, 1994', 'Mali Lošinj', 'Clay', 'Radka Surova', '6–4, 6–2']
SQL:

assistant: SELECT "Surface" FROM "Table" WHERE "Opponent in the Final" = 'Wynne Prakusya';