CREATE TABLE table_10968 ("Race" TEXT, "Circuit" TEXT, "Date" TEXT, "Pole position" TEXT, "Fastest lap" TEXT, "Winning driver" TEXT, "Constructor" TEXT, "Tyre" TEXT, "Report" TEXT)

Tell me the fastest lapf or jim clark being the winning driver for prince george
SELECT "Fastest lap" FROM table_10968 WHERE "Winning driver" = 'jim clark' AND "Circuit" = 'prince george'
SELECT "Fastest lap" FROM "table_10968" WHERE "Circuit" = 'prince george' AND "Winning driver" = 'jim clark'