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

### Instruction:
What is the propulsion for the RB 04 earlier than 1962?

### Inputs:
table_name: table, columns: ['Name', 'Year', 'Propulsion', 'launched by', 'Country']

### Response:
SELECT Propulsion FROM table WHERE Year < 1962 AND Name = rb 04