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

### Instruction:
When 21' 18.87 106.209mph is Tuesday August 24th what is Monday August 23rd?

### Inputs:
table_name: table, columns: ['Rank', 'Rider', 'Sat 21 Aug', 'Mon 23 Aug', 'Tues 24 Aug', 'Wed 25 Aug', 'Thurs 26 Aug', 'Fri 27 Aug', 'Sat 29 Aug']

### Response:
SELECT Mon 23 Aug FROM table WHERE Tues 24 Aug = 21' 18.87 106.209mph