What was the Score on February 18, 2008?
CREATE TABLE "doubles_15_10_5" (
  "outcome" text,
  "date" text,
  "surface" text,
  "partner" text,
  "opponent_in_the_final" text,
  "score" text
);
SELECT "score" FROM "doubles_15_10_5" WHERE "date"='february 18, 2008';