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

### Instruction:
What is the mean Year when the IWCR number was 5 and the Year withdrawn was bigger than 1926?

### Inputs:
table_name: table, columns: ['IWCR No.', 'Name', 'Wheel arrangement', 'SR No.', 'Year made', 'Year withdrawn']

### Response:
SELECT AVG Year made FROM table WHERE IWCR No. = 5 AND Year withdrawn > 1926