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

### Instruction:
When was the ship that had a fate of 'converted to laker, 1961; still in service' commissioned?

### Inputs:
table_name: table, columns: ['Name', 'Original name', 'Commissioned', 'Final decommission', 'Fate']

### Response:
SELECT Commissioned FROM table WHERE Fate = converted to laker, 1961; still in service