CREATE TABLE table_75193 ("Outcome" TEXT, "Date" TEXT, "Tournament" TEXT, "Surface" TEXT, "Partner" TEXT, "Opponents in the final" TEXT, "Score" TEXT)

Which surface had a partner of Sandrine Testud on November 14, 1999?
SELECT "Surface" FROM table_75193 WHERE "Partner" = 'sandrine testud' AND "Date" = 'november 14, 1999'
SELECT "Surface" FROM "table_75193" WHERE "Date" = 'november 14, 1999' AND "Partner" = 'sandrine testud'