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

### Instruction:
Which circuit has a length of 45 minutes and is held on August 6?

### Inputs:
table_name: table, columns: ['Race', 'Length', 'Class', 'Circuit', 'Date']

### Response:
SELECT Circuit FROM table WHERE Length = 45 minutes AND Date = august 6