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

### Instruction:
Which round had a winning driver of Uwe Alzen, at the Sepang International circuit?

### Inputs:
table_name: table, columns: ['Round', 'Location', 'Circuit', 'Date', 'Winning Driver']

### Response:
SELECT Round FROM table WHERE Winning Driver = uwe alzen AND Circuit = sepang international circuit