user: Question: How many CLASS P14 trains were made?
Columns: ['Class', 'Wheel arrangement', 'Manufacturer', 'Year made', 'Quantity made', 'Year(s) withdrawn']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Dugald Drummond (1895–1912)', 'Dugald Drummond (1895–1912)', 'Dugald Drummond (1895–1912)', 'Dugald Drummond (1895–1912)', 'Dugald Drummond (1895–1912)', 'Dugald Drummond (1895–1912)']
SQL:

assistant: SELECT SUM("Quantity made") FROM "Table" WHERE "Class" = 'P14';