CREATE TABLE table_63970 ("Class" TEXT, "Class Pos." FLOAT, "Driver" TEXT, "Team/Car" TEXT, "Laps" FLOAT, "Best Lap" TEXT, "On Lap" FLOAT)

What is the lowest laps that has an on lap less than 4, with 35 as a class pos.?
SELECT MIN("Laps") FROM table_63970 WHERE "On Lap" < '4' AND "Class Pos." = '35'
SELECT MIN("Laps") FROM "table_63970" WHERE "Class Pos." = '35' AND "On Lap" < '4'