user: Question: Which district has a Retired Republican hold and an incumbent of Rufus P. Spalding?
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Result']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Ohio 1', 'Benjamin Eggleston', 'Republican', '1864', 'Lost Re-election Democratic gain']
SQL:

assistant: SELECT "District" FROM "Table" WHERE "Result" = 'Retired Republican hold' AND "Incumbent" = 'Rufus P. Spalding';