What was the stadium in which the 2007-08 season placement was 8th in Serie c1/a?
CREATE TABLE "girone_a" (
  "club" text,
  "city" text,
  "stadium" text,
  "capacity" real,
  "2007_08_season" text
);
SELECT "stadium" FROM "girone_a" WHERE "2007_08_season"='8th in serie c1/a';