When zhang'an county 章安縣 is the commandery capital what is the province?
CREATE TABLE "territories_of_eastern_wu" (
  "province" text,
  "provincial_capital" text,
  "commandery" text,
  "commandery_capital" text,
  "no_of_counties" real
);
SELECT "province" FROM "territories_of_eastern_wu" WHERE "commandery_capital"='Zhang''an County 章安縣';