user: Question: Which office was Richard M. Griffin vying for on the Greenback ticket?
Columns: ['Office', 'Democratic ticket', 'Republican ticket', 'Prohibition ticket', 'Greenback ticket']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Governor', 'Lucius Robinson', 'Edwin D. Morgan', 'William J. Groo', 'Richard M. Griffin']
SQL:

assistant: SELECT "Office" FROM "Table" WHERE "Greenback ticket" = 'Richard M. Griffin';