CREATE TABLE table_16175 ("Serial number" CLOB, "Wheel arrangement  (  Whyte notation  ) " CLOB, "Build date" CLOB, "Operational owner ( s ) " CLOB, "Disposition" CLOB)

What is the wheel arrangement for the train in Riverdale, Georgia?
SELECT "Wheel arrangement ( Whyte notation )" FROM table_16175 WHERE "Disposition" = 'Riverdale, Georgia'
SELECT "Wheel arrangement ( Whyte notation )" FROM "table_16175" WHERE "Disposition" = 'Riverdale, Georgia'