When Jim Richards won at the Winton Motor Raceway circuit, what was the city and state listed?
CREATE TABLE "race_calendar" (
  "race_title" text,
  "circuit" text,
  "city_state" text,
  "date" text,
  "winner" text,
  "team" text
);
SELECT "city_state" FROM "race_calendar" WHERE "winner"='jim richards' AND "circuit"='winton motor raceway';