What was the surface of the tournament where Anna Benzon was the opponent in the final?
CREATE TABLE table_name_59 (
    surface VARCHAR,
    opponent_in_the_final VARCHAR
)
SELECT surface FROM table_name_59 WHERE opponent_in_the_final = "anna benzon"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What was the surface of the tournament where Anna Benzon was the opponent in the final? ### Input: CREATE TABLE table_name_59 (
    surface VARCHAR,
    opponent_in_the_final VARCHAR
) ### Response: SELECT surface FROM table_name_59 WHERE opponent_in_the_final = "anna benzon"