Detailed Instructions: Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.
Problem:Context: Aud Alvr (27 November 1921 -- 11 June 2000) was a Norwegian politician for the Liberal Party. 
 Question: What party does Aud Alvr serve?
Solution:
liberal party