user: Question: Which race has a replica of DNF?
Columns: ['Race', 'Position', 'Time', 'Speed', 'Replica']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Superbike', 'DNF', 'DNF', 'DNF', 'DNF']
SQL:

assistant: SELECT "Race" FROM "Table" WHERE "Replica" = 'DNF';