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

### Instruction:
What is teh born-died dates of the king with a throne name 315 and left office in 1021?

### Inputs:
table_name: table, columns: ['Throne Name', 'Title', 'Born-Died', 'Entered office', 'Left office', 'Family Relations']

### Response:
SELECT Born-Died FROM table WHERE Left office = 1021 AND Throne Name = 315