Where was the tournament where the match was on a hard surface and jan-michael gambill (19) was the finalist?
CREATE TABLE "singles" (
  "tournament" text,
  "surface" text,
  "week" text,
  "winner" text,
  "finalist" text,
  "semifinalists" text
);
SELECT "tournament" FROM "singles" WHERE "surface"='hard' AND "finalist"='jan-michael gambill (19)';