user: Question: Who was the entrant before 1988?
Columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Points']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1987.0, 'Osella Squadra Corse', 'Osella FA1G', 'Alfa Romeo 1.5L V8 t/c', 0.0]
SQL:

assistant: SELECT "Entrant" FROM "Table" WHERE "Year" < 1988.0;