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

### Instruction:
Which office was Richard M. Griffin vying for on the Greenback ticket?

### Inputs:
table_name: table, columns: ['Office', 'Democratic ticket', 'Republican ticket', 'Prohibition ticket', 'Greenback ticket']

### Response:
SELECT Office FROM table WHERE Greenback ticket = richard m. griffin