CREATE TABLE table_51715 ("Grand Prix" TEXT, "Pole Position" TEXT, "Fastest Lap" TEXT, "Winning Driver" TEXT, "Constructor" TEXT, "Report" TEXT)

When Michael Schumacher won the race, who had the fastest lap?
SELECT "Fastest Lap" FROM table_51715 WHERE "Winning Driver" = 'michael schumacher'
SELECT "Fastest Lap" FROM "table_51715" WHERE "Winning Driver" = 'michael schumacher'