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

### Instruction:
Which Performance has a Usage of hepa and a Class of h14?

### Inputs:
table_name: table, columns: ['Usage', 'Class', 'Performance', 'Performance test', 'Particulate size approaching 100% retention', 'Test Standard']

### Response:
SELECT Performance FROM table WHERE Usage = hepa AND Class = h14