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

### Instruction:
what's the series with reverse being swimming

### Inputs:
table_name: table, columns: ['Year', 'Denomination', 'Alloy', 'Reverse', 'Diameter', 'Weight', 'Obverse', 'Mintage', 'Series']

### Response:
SELECT Series FROM table WHERE Reverse = Swimming