When gaoliang 高涼 is the commandery what is the commandery capital?
CREATE TABLE "territories_of_eastern_wu" (
  "province" text,
  "provincial_capital" text,
  "commandery" text,
  "commandery_capital" text,
  "no_of_counties" real
);
SELECT "commandery_capital" FROM "territories_of_eastern_wu" WHERE "commandery"='Gaoliang 高涼';