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

### Instruction:
What is the silver number when gold is more than 4, and the total is less than 24?

### Inputs:
table_name: table, columns: ['Rank', 'Gold', 'Silver', 'Bronze', 'Total']

### Response:
SELECT AVG Silver FROM table WHERE Gold > 4 AND Total < 24