CREATE TABLE table_25544 ("Event" FLOAT, "Circuit" TEXT, "Date" TEXT, "Pole Position" TEXT, "Race 1 Winner" TEXT, "Race 2 Winner" TEXT, "Race 3 Winner" TEXT)

Who was the race 1 winner of the race at Hidden Valley Raceway?
SELECT "Race 1 Winner" FROM table_25544 WHERE "Circuit" = 'Hidden Valley Raceway'
SELECT "Race 1 Winner" FROM "table_25544" WHERE "Circuit" = 'Hidden Valley Raceway'