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

### Instruction:
When "speed metal" is the episode title what is the lowest number?

### Inputs:
table_name: table, columns: ['No.', '#', 'Episode title', 'Director', 'Writer(s)', 'U.S. original airdate', 'Prod. code']

### Response:
SELECT MIN No. FROM table WHERE Episode title = "Speed Metal"