user: Question: Which Wheels has Built smaller than 1958, a Location of York, and a Railway of NSR?
Columns: ['Railway', 'Builder', 'Built', 'Wheels', 'Location', 'ObjectNumber']
Types: ['text', 'text', 'real', 'text', 'text', 'text']
Sample row: ['C&SLR', 'Mather & Platt / Beyer, Peacock', 1890.0, 'Bo', 'LTMuseum', '1923-301']
SQL:

assistant: SELECT "Wheels" FROM "Table" WHERE "Built" < 1958.0 AND "Location" = 'York' AND "Railway" = 'NSR';