In this task, you're given an open-domain question. Your task is to provide an answer to the given question. There is only one unique answer for each question. Your answer should be short, and refer to an entity, date, number, etc. Do not put your answer in the context of a sentence.

[EX Q]: When did the civil war end in sierra leone?
[EX A]: 18 January 2002

[EX Q]: Who presides over any impeachment trial of the president of the united states?
[EX A]: Chief Justice of the United States

[EX Q]: Who won great british bake off season 4?
[EX A]:
Frances Elizabeth Quinn