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

### Instruction:
What is the lowest viewership in millions of the episode broadcast on 7 September 2001?

### Inputs:
table_name: table, columns: ['Episode Number', 'Broadcast Date', 'Title', 'Written by', 'Viewership (Millions)']

### Response:
SELECT MIN Viewership (Millions) FROM table WHERE Broadcast Date = 7 september 2001