CREATE TABLE table_21693 ("Winner" TEXT, "Country" TEXT, "Winter Olympics" TEXT, "FIS Nordic World Ski Championships" TEXT, "Holmenkollen" TEXT)

What year did Thorleif Haug win the Winter Olympics?
SELECT "Winter Olympics" FROM table_21693 WHERE "Winner" = 'Thorleif Haug'
SELECT "Winter Olympics" FROM "table_21693" WHERE "Winner" = 'Thorleif Haug'