What was the surface for the May 10, 2009 tournament?
CREATE TABLE table_71174 (
    "Date" text,
    "Tournament" text,
    "Surface" text,
    "Partner" text,
    "Opponents" text,
    "Score" text
)
SELECT "Surface" FROM table_71174 WHERE "Date" = 'may 10, 2009'
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 for the May 10, 2009 tournament? ### Input: CREATE TABLE table_71174 (
    "Date" text,
    "Tournament" text,
    "Surface" text,
    "Partner" text,
    "Opponents" text,
    "Score" text
) ### Response: SELECT "Surface" FROM table_71174 WHERE "Date" = 'may 10, 2009'