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

### Instruction:
what is the registration located on 31 january 1975 where first flew?

### Inputs:
table_name: table, columns: ['Number', 'Registration', 'First flew', 'Last flew', 'Flying hours', 'Location']

### Response:
SELECT Registration FROM table WHERE First flew = 31 January 1975