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

### Instruction:
Who were the semifinalists when sammy giammalva was  runner-up?

### Inputs:
table_name: table, columns: ['Week of', 'Tournament', 'Champion', 'Runner-up', 'Semifinalists', 'Quarterfinalists']

### Response:
SELECT Semifinalists FROM table WHERE Runner-up = Sammy Giammalva