What city in the 06/07 season had cagliari and finished 16th in serie a?
CREATE TABLE "2007_08_teams" (
  "club" text,
  "city" text,
  "stadium" text,
  "capacity" real,
  "2006_2007_season" text
);
SELECT "city" FROM "2007_08_teams" WHERE "2006_2007_season"='16th in serie a' AND "club"='cagliari';