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

### Instruction:
What is the smallest point amount for years prior to 1958 when the class is 350cc?

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

### Response:
SELECT MIN Points FROM table WHERE Year < 1958 AND Class = 350cc