user: Question: Which class has fewer than 10 and number(s) names?
Columns: ['Class', 'Number(s)', 'Quantity', 'Year(s) of Manufacture', 'Type']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['D I', 'names', 15.0, '1871–1875', 'B n2t']
SQL:

assistant: SELECT "Class" FROM "Table" WHERE "Quantity" < 10.0 AND "Number(s)" = 'names';