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

### Instruction:
Who were the semi finalists when Alexia Dechaume-Balleret Sandrine testud was the runner-up?

### Inputs:
table_name: table, columns: ['Week of', 'Tier', 'Winner', 'Runner-up', 'Semi finalists']

### Response:
SELECT Semi finalists FROM table WHERE Runner-up = alexia dechaume-balleret sandrine testud