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

### Instruction:
When was the Lisa 2 model discontinued?

### Inputs:
table_name: table, columns: ['Processor', 'Model', 'Clock speed (MHz)', 'L1 cache (bytes)', 'Introduced', 'Discontinued']

### Response:
SELECT Discontinued FROM table WHERE Model = lisa 2