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

### Instruction:
What is the average value for Lost, when the value for Goals Scored is greater than 20, and when the value for Played is less than 18?

### Inputs:
table_name: table, columns: ['Place', 'Team', 'Played', 'Draw', 'Lost', 'Goals Scored', 'Goals Conceded', 'Points']

### Response:
SELECT AVG Lost FROM table WHERE Goals Scored > 20 AND Played < 18