Question: Formally the Games of the XXX Olympiad what sports event did Dirkie Chamberlain represent her country?
Sentence (from "2012 Summer Olympics"): The 2012 Summer Olympics, formally the Games of the XXX Olympiad and commonly known as London 2012, was a major international multi-sport event celebrated in the tradition of the Olympic Games, as governed by the International Olympic Committee (IOC).
Relevant evidence: Yes