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

### Instruction:
What's the version that has a 20.0 mbit/s downstream rate?

### Inputs:
table_name: table, columns: ['Version', 'Standard name', 'Common name', 'Downstream rate', 'Upstream rate']

### Response:
SELECT Version FROM table WHERE Downstream rate = 20.0 mbit/s