CREATE TABLE table_35496 ("Date" TEXT, "Tournament" TEXT, "Surface" TEXT, "Opponen" TEXT, "Score" TEXT)

Which Surface has a Score of 7 5, 6 4?
SELECT "Surface" FROM table_35496 WHERE "Score" = '7–5, 6–4'
SELECT "Surface" FROM "table_35496" WHERE "Score" = '7–5, 6–4'