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

Question: On which date was the Dodge Dealers Grand Prix GTS class race?
SQL: SELECT "date" FROM "schedule" WHERE "race"='dodge dealers grand prix' AND "class"='gts';

Question: Which race was on the Las Vegas Motor Speedway for 2 hours?
SQL: SELECT "race" FROM "schedule" WHERE "circuit"='las vegas motor speedway' AND "length"='2 hours';

Question: Which class was on the Las Vegas Motor Speedway for 2 hours?
SQL: SELECT "class" FROM "schedule" WHERE "length"='2 hours' AND "circuit"='las vegas motor speedway';

Question: What circuit was on June 1 with a class of both?
SQL: SELECT "circuit" FROM "schedule" WHERE "class"='both' AND "date"='june 1';

Question: Which date was a GTS class on the Mosport International Raceway?
SQL: SELECT "date" FROM "schedule" WHERE "class"='gts' AND "circuit"='mosport international raceway';