user: Question: What Canadian Grand Prix race winner had Didier Pironi in Pole Position?
Columns: ['Race', 'Date', 'Location', 'Pole Position', 'Fastest Lap', 'Race Winner', 'Constructor', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['South African Grand Prix', '23 January', 'Kyalami', 'René Arnoux', 'Alain Prost', 'Alain Prost', 'Renault', 'Report']
SQL:

assistant: SELECT "Race Winner" FROM "Table" WHERE "Pole Position" = 'Didier Pironi' AND "Race" = 'Canadian Grand Prix';