What is the date of the Paul Revere 250 race in the Daytona International Speedway circuit?
CREATE TABLE "schedule" (
  "race" text,
  "length" text,
  "class" text,
  "circuit" text,
  "date" text
);
SELECT "date" FROM "schedule" WHERE "circuit"='daytona international speedway' AND "race"='paul revere 250';