user: Question: What is the wheel arrangement for the train in Riverdale, Georgia?
Columns: ['Serial number', 'Wheel arrangement ( Whyte notation )', 'Build date', 'Operational owner(s)', 'Disposition']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['unknown', '4-4-0', 'October 1856', 'Western and Atlantic Railroad #49 Texas', 'static display in Grant Park , Atlanta, Georgia']
SQL:

assistant: SELECT "Wheel arrangement ( Whyte notation )" FROM "Table" WHERE "Disposition" = 'Riverdale, Georgia';