user: ### NOW ANSWER:
Question: What entrant has Osella FA1C chassis after 1981?
Columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Pts.']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1971.0, 'Shell Arnold', 'March 701', 'Ford V8', 0.0]
SQL:

assistant: SELECT "Entrant" FROM "Table" WHERE "Year" > 1981.0 AND "Chassis" = 'Osella FA1C';