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

### Instruction:
what is the average points when the goal difference is less than 17, the club is getafe cf and the goals for is more than 30?

### Inputs:
table_name: table, columns: ['Position', 'Club', 'Played', 'Points', 'Wins', 'Draws', 'Losses', 'Goals for', 'Goals against', 'Goal Difference']

### Response:
SELECT AVG Points FROM table WHERE Goal Difference < 17 AND Club = getafe cf AND Goals for > 30