user: Question: Who are the co-drivers the Risi Competizione GT2 class that went under 329 laps and recorded a DNF?
Columns: ['Year', 'Team', 'Co-Drivers', 'Class', 'Laps', 'Pos.', 'Class Pos.']
Types: ['real', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: [2003.0, 'Audi Sport UK Arena Motorsport', 'Frank Biela Perry McCarthy', 'LMP900', 28.0, 'DNF', 'DNF']
SQL:

assistant: SELECT "Co-Drivers" FROM "Table" WHERE "Laps" < 329.0 AND "Class" = 'GT2' AND "Team" = 'Risi Competizione' AND "Pos." = 'DNF';