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

### Instruction:
What kind of Week 4  has a Week 9 of all housemates?

### Inputs:
table_name: table, columns: ['Week 1', 'Week 2', 'Week 3', 'Week 4', 'Week 5', 'Week 6', 'Week 7', 'Week 8', 'Week 9', 'Week 10 FINAL']

### Response:
SELECT Week 4 FROM table WHERE Week 9 = all housemates