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

### Instruction:
WHAT COMPETITION HAS MARIAN SANDU?

### Inputs:
table_name: table, columns: ['Opponent', 'Res.', 'Class', 'Score', 'Date', 'Competition', 'Notes']

### Response:
SELECT Competition FROM table WHERE Res. = marian sandu