user: Question: What is Works Number, when Type is RS-11, and when Number is 61?
Columns: ['Number', 'Builder', 'Type', 'Date', 'Works number']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['51', 'Baldwin Locomotive Works', 'DS4-4-750', '1949', '74408']
SQL:

assistant: SELECT "Works number" FROM "Table" WHERE "Type" = 'RS-11' AND "Number" = '61';