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

### Instruction:
What year was class of undine?

### Inputs:
table_name: table, columns: ['Class', 'Wheel arrangement', 'Manufacturer', 'Year made', 'Quantity made', 'Quantity preserved', 'Year(s) withdrawn']

### Response:
SELECT Year made FROM table WHERE Class = undine