When fc oberau is the oberbayern a what is the oberpfalz?
CREATE TABLE "southern_bavaria" (
  "season" text,
  "oberbayern_a" text,
  "oberbayern_b" text,
  "niederbayern" text,
  "schwaben" text,
  "oberpfalz" text
);
SELECT "oberpfalz" FROM "southern_bavaria" WHERE "oberbayern_a"='FC Oberau';