CREATE TABLE "calendar" (
  "round" real,
  "date" text,
  "city_and_venue" text,
  "winner" text,
  "runner_up" text,
  "3rd_placed" text,
  "4th_placed" text,
  "results" text
);

Question: Who placed fourth when the winner was Greg Hancock?
SQL: SELECT "4th_placed" FROM "calendar" WHERE "winner"='Greg Hancock';

Question: Who was the runner-up on September 11?
SQL: SELECT "runner_up" FROM "calendar" WHERE "date"='September 11';

Question: How many rounds were on July 10?
SQL: SELECT COUNT("round") FROM "calendar" WHERE "date"='July 10';