Which Surface has a Score of 2009 wta tour?
CREATE TABLE table_name_13 (
    surface VARCHAR,
    score VARCHAR
)
SELECT surface FROM table_name_13 WHERE score = "2009 wta tour"
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: Which Surface has a Score of 2009 wta tour? ### Input: CREATE TABLE table_name_13 (
    surface VARCHAR,
    score VARCHAR
) ### Response: SELECT surface FROM table_name_13 WHERE score = "2009 wta tour"