CREATE TABLE table_80114 ("Year" FLOAT, "Team" CLOB, "Co-Drivers" CLOB, "Class" CLOB, "Laps" FLOAT, "Pos." CLOB, "Class Pos." CLOB)

In which class had 252 laps and a position of dnf?
SELECT "Class" FROM table_80114 WHERE "Pos." = 'dnf' AND "Laps" = '252'
SELECT "Class" FROM "table_80114" WHERE "Laps" = '252' AND "Pos." = 'dnf'