Given the task definition and input, reply with output. Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Which alpine ski racer was World Cup champion in 1967 and 1968, won the Triple Crown of Alpine Skiing with a sweep of the three gold medals for downhill, giant slalom and slalom at the 1968 Winter Olympics, and then retired?
1968 winter olympics