user: Question: Which class has laps under 77?
Columns: ['Year', 'Class', 'Tyres', 'Team', 'Co-Drivers', 'Laps', 'Pos.']
Types: ['real', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: [1989.0, 'C1', 'D', 'Nissan Motorsports', 'Mark Blundell Martin Donnelly', 5.0, 'DNF']
SQL:

assistant: SELECT "Class" FROM "Table" WHERE "Laps" < 77.0;