Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the sum of Points for 250cc class, ranked 13th, later than 1955?

### Inputs:
table_name: table, columns: ['Year', 'Class', 'Team', 'Points', 'Rank', 'Wins']

### Response:
SELECT SUM Points FROM table WHERE Class = 250cc AND Rank = 13th AND Year > 1955