Who was the winner for Peter Jackson Racing at Mallala Motor Sport Park?
CREATE TABLE "race_calendar" (
  "date" text,
  "series" text,
  "circuit" text,
  "city_state" text,
  "winner" text,
  "team" text
);
SELECT "winner" FROM "race_calendar" WHERE "team"='peter jackson racing' AND "circuit"='mallala motor sport park';