CREATE TABLE table_36398 ("Race" TEXT, "Length" TEXT, "Class" TEXT, "Circuit" TEXT, "Date" TEXT)

What is the class of the Coca-cola classic 12 hours of sebring race?
SELECT "Class" FROM table_36398 WHERE "Race" = 'coca-cola classic 12 hours of sebring'
SELECT "Class" FROM "table_36398" WHERE "Race" = 'coca-cola classic 12 hours of sebring'