user: Question: Who won the 250 cc in 1987?
Columns: ['Year', 'Track', '125 cc', '250 cc', 'Report']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1990', 'Anderstorp', 'Hans Spaan', 'Carlos Cardús', 'Report']
SQL:

assistant: SELECT "250 cc" FROM "Table" WHERE "Year" = '1987';