user: Question: Which class had a machine of RS125R, points over 113, and a rank of 4th?
Columns: ['Year', 'Class', 'Team', 'Machine', 'Points', 'Rank', 'Wins']
Types: ['real', 'text', 'text', 'text', 'real', 'text', 'real']
Sample row: [1991.0, '125cc', 'ELF Kepla-Meiko Honda', 'RS125', 55.0, '13th', 0.0]
SQL:

assistant: SELECT "Class" FROM "Table" WHERE "Machine" = 'RS125R' AND "Points" > 113.0 AND "Rank" = '4th';