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

### Instruction:
What construction completed is named nelson tunnel/commodore waste rock?

### Inputs:
table_name: table, columns: ['CERCLIS ID', 'Name', 'County', 'Proposed', 'Listed', 'Construction completed', 'Partially deleted']

### Response:
SELECT Construction completed FROM table WHERE Name = nelson tunnel/commodore waste rock