user: Question: What was the SECR number of the item made in 1861?
Columns: ['Class', 'Wheel arrangement', 'LCDR number(s)', 'SECR numbers', 'Manufacturer', 'Year made', 'Quantity made', 'Quantity preserved', 'Year(s) withdrawn']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Surplus and secondhand acquisitions (1860–1861)', 'Surplus and secondhand acquisitions (1860–1861)', 'Surplus and secondhand acquisitions (1860–1861)', 'Surplus and secondhand acquisitions (1860–1861)', 'Surplus and secondhand acquisitions (1860–1861)', 'Surplus and secondhand acquisitions (1860–1861)', 'Surplus and secondhand acquisitions (1860–1861)', 'Surplus and secondhand acquisitions (1860–1861)', 'Surplus and secondhand acquisitions (1860–1861)']
SQL:

assistant: SELECT "SECR numbers" FROM "Table" WHERE "Year made" = '1861';