user: Question: What team did carlos cardus drive for in 1983 when he got less than 21 points?
Columns: ['Year', 'Class', 'Team', 'Points', 'Rank', 'Wins']
Types: ['real', 'text', 'text', 'real', 'text', 'real']
Sample row: [1983.0, '250cc', 'Cobas - Rotax', 2.0, '28th', 0.0]
SQL:

assistant: SELECT "Team" FROM "Table" WHERE "Points" < 21.0 AND "Year" = 1983.0;