user: Question: In the Canadian Grand Prix, what tyre was used when Jacky Ickx held pole position?
Columns: ['Race', 'Circuit', 'Date', 'Pole position', 'Fastest lap', 'Winning driver', 'Constructor', 'Tyre', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['South African Grand Prix', 'Kyalami', '1 March', 'Jack Brabham', 'Jackie Stewart', 'Jackie Stewart', 'Matra - Ford', 'D', 'Report']
SQL:

assistant: SELECT "Tyre" FROM "Table" WHERE "Pole position" = 'Jacky Ickx' AND "Race" = 'Canadian Grand Prix';