CREATE TABLE "schedule" (
  "race" text,
  "length" text,
  "class" text,
  "circuit" text,
  "date" text
);

Question: What is the class of the Charlotte Camel gt 500 race?
SQL: SELECT "class" FROM "schedule" WHERE "race"='charlotte camel gt 500';

Question: What is the race 12 hours in length?
SQL: SELECT "race" FROM "schedule" WHERE "length"='12 hours';

Question: What is the class of the Coca-cola classic 12 hours of sebring race?
SQL: SELECT "class" FROM "schedule" WHERE "race"='coca-cola classic 12 hours of sebring';

Question: What is the class of the Budweiser Grand Prix of Miami race with a length of 3 hours?
SQL: SELECT "class" FROM "schedule" WHERE "race"='budweiser grand prix of miami' AND "length"='3 hours';

Question: What is the date of the Paul Revere 250 race in the Daytona International Speedway circuit?
SQL: SELECT "date" FROM "schedule" WHERE "circuit"='daytona international speedway' AND "race"='paul revere 250';

Question: What race is 12 hours in length?
SQL: SELECT "race" FROM "schedule" WHERE "length"='12 hours';