user: Question: What LNER Class has a Class of 3?
Columns: ['Class', 'Type', 'Quantity', 'Date', 'LNER Class']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['2', '4-4-0', 25.0, '1887–1892', 'D7']
SQL:

assistant: SELECT "LNER Class" FROM "Table" WHERE "Class" = '3';