 Complete the following phrase:  In 2011, Holmenkollen hosted the FIS Nordic World Ski Championships and there was no separate Holmenkollen Ski Festival. Previously Holmekollen had hosted World Championships in 1930, 1966, 1982, and it also hosted the Nordic skiing events of 1952 Winter Olympics that were also that years World Championships. Holmenkollen has also hosted biathlon World Championship events in 