instruction:
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.
question:
When did united last win the champions league?
answer:
21 May 2008


question:
What value of the russian culture is represented in the story the nose?
answer:
outward appearance


question:
Who was the last ruler of the tang dynasty?
answer:

Emperor Ai of Tang