What is the result of the match in round 1r against tunisia and on a hard surface?
CREATE TABLE "singles_28" (
  "edition" text,
  "round" text,
  "date" text,
  "against" text,
  "surface" text,
  "opponent" text,
  "result" text
);
SELECT "result" FROM "singles_28" WHERE "round"='1r' AND "surface"='hard' AND "against"='tunisia';