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

### Instruction:
What is the Parameter that has the third phase of 0.50 m?

### Inputs:
table_name: table, columns: ['Parameter', '1st stage', '2nd stage', '3rd stage', '4th stage']

### Response:
SELECT Parameter FROM table WHERE 3rd stage = 0.50 m