CREATE TABLE "calendar" (
  "round" real,
  "circuit" text,
  "state" text,
  "date" text,
  "winning_driver" text
);

Question: How many rounds were run at Calder Park?
SQL: SELECT COUNT("round") FROM "calendar" WHERE "circuit"='calder park';

Question: In which state can you find the Sandown circuit?
SQL: SELECT "state" FROM "calendar" WHERE "circuit"='sandown';

Question: How many rounds were run in New South Wales?
SQL: SELECT COUNT("round") FROM "calendar" WHERE "state"='new south wales';