user: Question: Which Builder has a Date smaller than 1913, and a Length of feet (m), and a Number of 15?
Columns: ['Number', 'Builder', 'Type', 'Date', 'Length', 'Capacity']
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['10', 'Laconia Car Company', 'baggage car', 1882.0, 'feet (m)', 'no seats']
SQL:

assistant: SELECT "Builder" FROM "Table" WHERE "Date" < 1913.0 AND "Length" = 'feet (m)' AND "Number" = '15';