what are all the circuit for 9 september and gt3 winner hector lester allan simonsen
CREATE TABLE "calendar" (
  "round" real,
  "circuit" text,
  "date" text,
  "length" text,
  "pole_position" text,
  "gt3_winner" text,
  "gtc_winner" text
);
SELECT "circuit" FROM "calendar" WHERE "date"='9 September' AND "gt3_winner"='Hector Lester Allan Simonsen';