user: Question: What was built in a class with less than 10, and the Downer Rail owner?
Columns: ['Owner', 'Class', 'Number in class', 'Road numbers', 'Built']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['SCT Logistics', 'SCT class', 15.0, 'SCT001-SCT015', '2007-2008']
SQL:

assistant: SELECT "Built" FROM "Table" WHERE "Number in class" < 10.0 AND "Owner" = 'Downer Rail';