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

### Instruction:
What is the assumed office date of the prime minister ranked 22?

### Inputs:
table_name: table, columns: ['Rank:', 'Prime Minister:', 'Party:', 'Assumed Office:', 'Left Office:', 'TOTAL Time in Office:']

### Response:
SELECT Assumed Office: FROM table WHERE Rank: = 22