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

### Instruction:
Which rider from the 1971 Isle of Man Junior TT 250cc final standings had a speed equal to 86.15mph?

### Inputs:
table_name: table, columns: ['Place', 'Rider', 'Country', 'Machine', 'Speed', 'Time', 'Points']

### Response:
SELECT Rider FROM table WHERE Speed = 86.15mph