Question: In which city were the 2017 UCI Mountain Bike World Championships held; a city within the largest country in Oceania and the world's sixth largest country by total area?
Sentence (from "2017 UCI Mountain Bike World Championships"): The world championships in four-cross were held at Val di Sole, Italy, on 24 and 25 August 2017, alongside UCI World Cup events in cross-country and downhill.
Relevant evidence: No