Which Outcome has a Year larger than 1939, and an Opponent in the final of frank kovacs?
CREATE TABLE "grand_slam" (
  "outcome" text,
  "year" real,
  "championship" text,
  "surface" text,
  "opponent_in_the_final" text,
  "score_in_the_final" text
);
SELECT "outcome" FROM "grand_slam" WHERE "year">1939 AND "opponent_in_the_final"='frank kovacs';