user: Question: Which Manufacturer has a Quantity of 1, and has the LMMR name Great Mountain?
Columns: ['Manufacturer', 'Type', 'Quantity', 'LMMR Name', 'GWR No.']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Andrew Barclay Sons & Co.', '0-6-0T', 1.0, 'George Waddell', 312.0]
SQL:

assistant: SELECT "Manufacturer" FROM "Table" WHERE "Quantity" = 1.0 AND "LMMR Name" = 'Great Mountain';