You will be given a definition of a task first, then some input of the task.
In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Among the entities, try to find the best entity that is most likely to fill in "_" and classify the answers based on options.

Melbourne, Australia (CNN) Australia's High Court has ruled that a national postal vote on same-sex marriage will go ahead, after a challenge by marriage equality advocates failed. Same-sex marriage advocates had taken the government to court over the postal vote which they argued was both unnecessary and an illegal use of public funds. But in decision Thursday, the High Court ruled the national survey could go ahead. Ballot papers will be now be mailed out to households across Australia from September 12, beginning the two-month process. The question will be, "Should the law be changed to allow same-sex couples to marry?"Australia will now vote on whether same-sex marriage should be made lawA majority of Australians support marriage equality, according to polling 
 Questions:"All _ deserve the same opportunity for love, commitment and happiness. (A) Melbourne (B) Australia (C) CNN (D) High Court
Output:
(B)