user: Question: What manufacturer makes locomotive number CTN 46?
Columns: ['Locomotive number', 'Model', 'Type', 'Propulsion', 'Manufacturer']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['CTN 32', 'VO-1000', 'Switcher', 'Diesel-electric', 'Baldwin Locomotive Works']
SQL:

assistant: SELECT "Manufacturer" FROM "Table" WHERE "Locomotive number" = 'CTN 46';