CREATE TABLE table_name_30 (class VARCHAR, rank VARCHAR, machine VARCHAR, points VARCHAR)

Which class had a machine of RS125R, points over 113, and a rank of 4th?
SELECT class FROM table_name_30 WHERE machine = "rs125r" AND points > 113 AND rank = "4th"
SELECT "class" FROM "table_name_30" WHERE "4th" = "rank" AND "machine" = "rs125r" AND "points" > 113