user: Question: On what surface was the match played with a score of 4–6, 6–3, 6–1?
Columns: ['Date', 'Tournament', 'Surface', 'Opponent in the final', 'Score']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['15 September 1996', 'Karlovy Vary , Czech Republic', 'Clay', 'Ruxandra Dragomir', '6–2, 3–6, 6–4']
SQL:

assistant: SELECT "Surface" FROM "Table" WHERE "Score" = '4–6, 6–3, 6–1';