What's the Super G when the combined was 13 and the overall was more than 7?
CREATE TABLE "season_standings" (
  "season" real,
  "overall" real,
  "slalom" text,
  "giant_slalom" real,
  "super_g" text,
  "downhill" text,
  "combined" text
);
SELECT "super_g" FROM "season_standings" WHERE "overall">7 AND "combined"='13';