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

### Instruction:
How many goals on average are there for rank 3?

### Inputs:
table_name: table, columns: ['Rank', 'Club', 'Points', 'Played', 'Victories', 'Draws', 'Defeats', 'Goals for', 'Goals against', 'Goal average']

### Response:
SELECT AVG Goals for FROM table WHERE Rank = 3