Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

[EX Q]: To which country do the Chatham Islands belong?
[EX A]: chatham islands

[EX Q]: Who won the Women's Singles at the 2015 Australian Open Tennis Championships?
[EX A]: the championships, wimbledon

[EX Q]: Cambodia, which over the course of 1841 to 1953 was under the joint suzerainty of Thailand and Vietnam then was a monarchy under the protection of France which included an occupation by Japan, was steered to independence in 1953 by whom?
[EX A]:
cambodia