Which Surface has a Semi finalists of conchita mart nez arantxa s nchez?
CREATE TABLE table_name_9 (
    surface VARCHAR,
    semi_finalists VARCHAR
)
SELECT surface FROM table_name_9 WHERE semi_finalists = "conchita martínez arantxa sánchez"
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 Semi finalists of conchita mart nez arantxa s nchez? ### Input: CREATE TABLE table_name_9 (
    surface VARCHAR,
    semi_finalists VARCHAR
) ### Response: SELECT surface FROM table_name_9 WHERE semi_finalists = "conchita martínez arantxa sánchez"