What is the Surface when Todd Woodbridge was the runner-up, and a Date of 24 february 1997?
CREATE TABLE "singles_9_2_7" (
  "outcome" text,
  "date" text,
  "championship" text,
  "surface" text,
  "opponent" text,
  "score" text
);
SELECT "surface" FROM "singles_9_2_7" WHERE "outcome"='runner-up' AND "date"='24 february 1997';