Which surface had a partner of Sandrine Testud on November 14, 1999?
CREATE TABLE table_75193 (
    "Outcome" text,
    "Date" text,
    "Tournament" text,
    "Surface" text,
    "Partner" text,
    "Opponents in the final" text,
    "Score" text
)
SELECT "Surface" FROM table_75193 WHERE "Partner" = 'sandrine testud' AND "Date" = 'november 14, 1999'
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 had a partner of Sandrine Testud on November 14, 1999? ### Input: CREATE TABLE table_75193 (
    "Outcome" text,
    "Date" text,
    "Tournament" text,
    "Surface" text,
    "Partner" text,
    "Opponents in the final" text,
    "Score" text
) ### Response: SELECT "Surface" FROM table_75193 WHERE "Partner" = 'sandrine testud' AND "Date" = 'november 14, 1999'