user: Question: What is listed as the Date made with a Quantity made of 13?
Columns: ['Class', 'Type', 'Fleet numbers', 'Quantity made', 'Manufacturer', 'Date made', 'Date withdrawn']
Types: ['text', 'text', 'text', 'real', 'text', 'text', 'text']
Sample row: ['A', '4-4-0', '3–5, 9, 17, 20, 34, 63–68', 13.0, 'York Road Works (7) Derby Works (6)', '1901–1908', '1929–1936']
SQL:

assistant: SELECT "Date made" FROM "Table" WHERE "Quantity made" = 13.0;