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.

Input: Consider Input: Who presides over any impeachment trial of the president of the united states?

Output: Chief Justice of the United States


Input: Consider Input: Who sang i wish you peace by the eagles?

Output: Bernie Leadon


Input: Consider Input: Beri beri is a disease caused by the deficiency of?


Output: vitamin B1