Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.

Ex Input:
Romania and which other country joined the EU on the 1st January 2007?

Ex Output:
bulgaria

Ex Input:
In February 2013 Jennifer Lawrence won an Oscar for her role in which film?

Ex Output:
the silver linings playbook

Ex Input:
K2, the world's second highest mountain, is in which country?

Ex Output:
pakistan