On what team did John Bowe round winner at Winton Motor Raceway belong to?
CREATE TABLE "race_calendar" (
  "circuit" text,
  "location_state" text,
  "date" text,
  "round_winner" text,
  "team" text
);
SELECT "team" FROM "race_calendar" WHERE "round_winner"='john bowe' AND "circuit"='winton motor raceway';